$KEN\NOOD

Model TS-180S

INSTRUCTION MANUAL

NOTETh is manual covers equipment w ithout t he DF-l 80 memory unit. If your TS-l 80S has the memory unit , referto t he separate DF-1 80 man ual for its operation. For equipment without the memory unit , the following swit chescannot be used .DSP/M 1, IThe Differenti al Display can be used .), M , M', M" , M. SHIFT IDOWN, UP).

AFTER UNPACKING• SHIPPING CONTA INER: Save th e boxes and packing in the event your unit need s to be transported for

rem ote operation , maintenance or service .• Th e foll owing ex plic it defi ni t ions apply in t his manuai :NOTE = If disregarded, inconvenience only may occur. There is no risk of equipment damag e or personal injury .CAUTION = Equi pm ent damage may occur , but not personal injury.

Piease read thi s instr uct ion manu al carefully BEFORE placing your transceiver in serv ice.

CONTENTS

ILLUSTRATIONS AND GRAPHS

5.5 Service . 2 7

SECTION 6 CIACU1T OESCAIPTION . .. . . . . . . . .. .. .. . 28

SECTlON 7 TAOUBLESHOOTIN G 3 5

TS -180S BLOCK OIAGAAM 3 6

TOPAND BOTTOM VIEW OFTHETS· 18 0 S 37

SCHEMATIC DIAGAAM . .. .. 3 8

SPECIF1CATIONS . . . . . . . . . . . . 3

SECTlON 1 FEATUAES . . . . . .. . . . . . . . . . . . . . . 4

SECTION 2 INSTALLATION .. .. .. .. . .. 6

2 . 1 Unpacking . . . . . . . . . . . . 6

2 .2 Op era ting Location . . . . . . . . 6

2.3 Pcwer Connec t ions . . . . . . . . . . 62.4 Anten na . . . . 72 .5 Microphone . . . . . . . . 82 .6 Key . . . . . 8

2 .7 Externa! Spe aker and Headphone s 8

2.8 ATTY IFSKI. . . ... ...... ....... ...... 8

2.9 Ground . 8SECTION 3 CONTAOLS ANO THEIA FUNCT10N . 9

3. 1 Front -Panel Controls . . . 93.2 Aear -Pane l Controls and Con nectors 12

SECTION 4 OPEAATION .. . .. .. .. .. .. .. . . . . 14

4 .1 Preliminary Procedures . . . . . . . . . . 14

4. 2 ReceiverTuning . . . . 14

4 .3 Reading the Ope ret inq Freque ncv 14

4.4 DSP/DIFF Switch . . . 15

4 .5 DSP/M1 Switch 15

4.6 RFGAIN .. .. .. . . . 16

4 .7 RF ATT. RGC Position . . . 16

4 .8 RIT .... ... .. .. . 16

4.9 IF Shift. .. .. .. .. .. .. ... 16

4 .10 Nois e Blanke r N.B. Tune . . . . . . . 17

4 .11 AGC .. .... .. . . .. 17

4 .1 2 Transmit Operat ion . . . 1 7

4 . 13 AF PWA Control . . . . . . . . . . . . .. 1 7

4 .14 SSB Operation . . 17

4 . 15 CW Operation . . . . . . . . . . . . . . 18

4.1 6 Operation with a linear Amplifier . . . . . 19

4 . 17 RTTY Operation ~ . . . . 19

4 .18 Spee ch Processor .. 19

4 . 19 Protection Circuita . . . . . 20

4 .20 MIC Attenuation . . . . . . 20

4 .2 1 Fixed Cha nnel Operaticn 20

4 .2 2 Mobi le Operation . . . . . . . . 20

4 .2 3 Fixed Station Operation . .. . . 2 3

SECTION 5 AODITIONALINFOAMAT10N 24

5. 1 General 24

5.2 Accessories 24

5 .3 Adjust ment 27

5 .4 Order ing Spere Parts . . . . . 27.".-.

2\

Fig .2·1

Fig .2-1

Fig .2-2

Fig .2-3

Fig .3-1

Fig . 3 -2

Fig .4- 1

Fig .4-2

Fig . 4 -3

Fig . 4 -4

Fig . 4 -5

Fig .4-6

Fig .4-7

Fig .4-8

Fig .4-9

Fig .4-10

Fig.4·11

Fig .4-12

Fig .4-13

Flg .4-14

Fig.5·1

Fig .5-2

Fig .5-3

Fig . 5-4

Fig . 5-5

Fig . 5 -6

Fig .5-7

Fig .5-8

Fig. 5 ·9

Fig .5-10

Fig.6-1

Fig . 6 -2

Fig . 6 -3

Fig . 6 -4

Fig . 6 -5

Fig . 6 -6

(a) Front and Rear Panel Connectio ns . 6

(b) Power Connector W iring . . . . . . . . . . . . . . . . .. 6

M icrop ho ne Co nnection . . . . . . . . . . . . . . . . . . . . . . . .. 8

A M ic rophon e Suit able fo r PTT and VOX Opera tion 8

Front -Panel V iew . . . 10

Hear-Panel View 13

Reading the Operating Frequ ency '4

Digital Frequencv Display Ooeret ton . . 15

RF GAIN Control Op eration 16

lF SHIFT Co ntrol . . . . . . . 16

NB Tune Control 17

COMP LEV El . .. 18

Key Connection 19

RTTY Frequency 19

MIC Attenuation . . . . 20

Crystal Oscillator Circuit 2 1

Mobile Operation 2 1

Adjusting Antenna Resonance 2 2

Antenna Matching Circuit s 22

Rotary Beam Antenn a . . . . . 23

Cabi net Removal . . 2 4

VFO -180 Connecti on . . . 24

Acce ssory Connect or . . . . . . . . . . . . . . . . .. 24

X VTR Connec tor . . . . . . . . . . . . . 2 5

Attach ing the Extensi ón Feet 25

Inst alling the Optional CW and /o r SSB Filt ers 2 5

Inst alling the DF-180 Mem or y Unit 26

Counter Frequency Calibrati on 26

Side Tone Adjustment 2 7

Out of Band Frequencv Display 27

RF ATT Circuit . 29

PRE M IX Circuit . . . . . 3 0

IF OUAL FILTER . . . . 3 0

DISPLAY Unit.... . 32

PLL Circuit. . . . . . . . . . 32

D.F.C Circuit 3 3

f"' "'''.''''' '''' ''' ''''.·''''..·.'''..·'''''.· "·.,,".·.""'·."".·.II'''·.'' ·..,,,, ·,,'''. ·.'III.·.IIIl.·.''''.·.'''..·.II''.·."".·.,",.-."".·.,""·."".·.11".·."".· ,..·,'"..·.,,,..·,"" Il "" "" " " " " ""._."" " .~

! SPECIFICATIONS ..."" "•.•"".·."".· '.·.11".·.''',.- ".· ".·.,''..·."".·."".·.11 11.·.11".·."".·."".· ·.11".·."".-.''''.-.11 ·.11".-."".-.."..-. 11 '..-.11" 11'..·.'111.·."".·."".·."".·.,,".·,"".·,''' ,,·. '' ·.11 '''·.''''.· "". ."",.."" "" ..,,':-

TS- 1S0S(with O.F.CITS-1S0(wilhoUl O.F.C)

1.SO lO 2 .00 MHz3 .50 lo 4 .00 MHz7.00 lO 7 .30 MHz14.00 lo 14.35 MHz21 .00 lo 21.45 M Hz2S .00 lo 29.70 MHz10.0 MHz Ireeeive on ly lA : 2 .0 lo 15.0 MHz eaeh 500 kHz bandS: lS.0 lo ia , 5 MHzC: 25 .0 lo 25.5 MHz

Proviso: Following frequencies cannot be used ."IF frequency 18.830 MHz and its adjacent frequency)'VFO frequeney 16.6 MHz- 6 . 1 MHz and its adjaeenl frequeney)"IF frequency , VFO frequency harrnonic and I/N frequencies.

N: an integral numberMode SSB (A 3JI, CW (A 11. FSK IF11Vollage Requ iremenls 11.0 V OC l o 16.0 V OC (13 .S V OC nominallPower Con sumption , , ,

(al 13.S VOC VSWR less Ihan 1. 5: 1)

GENERALFrequency Range " . . , " ." , 160 meter band

SO meter band40 meter band20 meter band1 5 meter band10 meter band

WWVAU X 2 SANOS

ReceiveTransmit

1. 2 A19.6 A

1.6 A20 A

Semiconductor Complement . , . . , .TS-1S0 (without O.F.C) TS-1S0S (with O.F.CI

TransistorsFETSICSDiodesMPU

1452 133

2 131

1792653

2502

Dimensions (Projections not lncfudedl 325Weighl .

112- 13 /16") widex 133 15-1/4"1 high x 2S7 (11-5i16"ldeep

TS-1S0(wilhoul O.F.C) TS-1S0 SIwilh O.F.CI

1 1.0 kg 124 .2 Ibsl 11 .5 kg 125.3 Ibsl

TRANSMITTER SECTIONInput Power .

160 to 1 5 meters band 10 meters band

SSBCWFSK

200 Watts PEP160 Watts PEP100 Watts OC

160 Watts PEP140 Watts OClOO Watts OC

Antenna Impedance , 50 OhmsCarrier Suppression , , . , . . , . , Carr ier better than 40 dB down from th e out put signalUnwanted Sideband Suppression Unwanted side band is better than 50 dB down from the output signa!Harmonic Radiation , .. , Better than 40 dB down from output signal (out of Amateur Band )Spuriou s Radiat ion , Better than 50 dB down from output signal (in Amateur Band)Mierophone Impedanee 500n l o 50 knAF Response of Transmitter 400 to 2600 Hz

RECEIVER SECTIONReceiver Sensit iv ity , 0 .25JLV S + N/N 10 dB or moreImage Beject lon . .. , Image frequency better than 60 dB down from the output signalIF Rejection , IF frequency is 80 dB or more down frorn output signa!Frequency Stability ., " . " Wit hin ± 1 kHz during the firs t hour after 1 minute of wa rmup

Within 10 0 Hz du ring any 30 minute period after wa rmupReeeiver Selectivity SSS, CW WI OE

2.4 kHz 1-6 dB)4 .2 kHzl -60 dSI

CW NAR , FSK (Wilh optional filler YK-SSCI0 .5 kHz (-6 dSI1 .5 kHzl- 60 dS)

Audio Output , , . . , More t han 2 wa t ts (wit h less t han 10 % dist ortion ) int o a 4 ohm load .AF OUlPUI Impedanee 4 l o 16 ohms (speaker or headphonesl

NOTE: Circuit and rati ngs may change w it hout not ice due t o developments in t echnology , 3

FEATURESSECTION 1~" ~"m".m" . ."".""""m. ."".. "" . 'm"~"~"m" .. "m .m" ""' " "m , " , " "" , . m" . ' " ' " 'm" 'm" 'm" '~ ." ' " 'm" . " ' " ' " ' " ' " ' " ~" . " " . , " ' " ,",,,.,,,,,""".,"" ,"-,";

~'"''''N_ ''''''' ' '''''' ''''''' ' '''''' ' '''''' -'''''' - '''''' ' ''''' ' ''''''' '."" "•.."" ,"' "".-.•",.-." -."" ","",,,,,",,,,,,,,",,,,,-,,'''" ,''',,,,,,,,,-,,,,,,,,,,,,,,,,,,,,,,,,,,,, " - " ".,.."" . ,''", .".,.."" .."" 10;-

1. DFC (Digital Frequency Control), with fourtunable memories.

-Memorias are usable in transmit and/o r receivemodes. Split -f requ ency operat ion is possible withthe TS - 1SOS VFO and any one of the memories,with the TS-1 SOS VFO and optional VFO-1 SO ex ­ternal VFO, and w ith a DFC memory andVFO -1S0.

• Memorias can store frequencies from theTS-1S0S VFO, FIX CH, and VFO -1S0. Also, fre­quencies can be transferred between memories.

oMemory-shift paddle switches allow any of themem ory frequencies to be tuned in 20-Hz stepsup or down, slow or fast, with recall of theoriginal stored frequency.

2 . High-performance so lid-state f inal sta ge.oNo dipping or loading . Just dial up the frequency ,

peak the drive, and operate .oHigh power. .. 200 W PEP/1 60 W DC input on

160 - 1 5 meters, and 160 W PEP/140 W DC on10 meters.

oH igh ly reliable , wi th large heat sink .°Final tran sist ors (two SRF1714s, each with

Pc = 250 W) are manufactured by Motorola toKenwood 's specifications.

oDou ble protection circuits . If the SWR is morethan 3 : 1, transmit power is automatically reduc­ed . Also , if the case temperature of the transmit­ter output transformer rises abnorrnallv. transmitpow er is reduced .

3 . Covers 160 - 10 meters, with provisions forWARC allocations.

oT ransceives on 160, S0/75, 4 0 , 20, 1 5 , and allof 10 meters.

oReceives WWV on 10 MHzoAdaptable , by inst all ing additional parts, to three

new bands, if they should be made available atthe World Administrat ive Radio Conference. AUX1 and AUX 2 as well as the WWV positions areprovided on t he BA ND sw it ch for this purpose.

oThe TS - 1SOS VFO covers more t han 50 kHzabove and below eac h band , for MARS and otherapplicat io ns, and will t hus accommodate shiftsand expansion of existing bands that might bemade at WARC.

4 . Built-in microprocessor-controlled large dig italdispiay.

oShow s actual operating frequency .oDig it al display of memory and of frequency dif­

ference. W it h the DSP/M switch t urned on whenthe DSP/DIFF switc h is depressed, t he frequency

that was displayed is mem orized and shown atthe left side of the digital display, and the dif­ference between the memorized frequency andthe new frequency is shown at the right side, co n­t inuously changing as the main tuning is changed .

oBlinking deci ma l po ints indicate "out of band " .0Monoscale analog dial also provided.

5 . Impr oved dynamic range, with optimum cross­modulat io n rejection.

oRF AGC, using a PIN diod e bet w een t he antennainput and RF amplifier. Attenu ating is accompli sh­ed by the mixer' s AGC output , due to superio rcharacteristics of forward bias current versushigh·frequency resistance. Thu s, the RF-am¡¡l ifierbias vo lt age is set automati ca lly for opt imumcross-modulation rejection.

oRF attenuator, w ith f ixed AGC vol tage for about20 dB of attenuat ion.

6. Sing le-conv ersion system w ith hi ghly advancedPLL circu it o

oUses only one crys t al.° lmproved stabilitv and spurious characte rist ics .

7 . Easy -to-use M ODE switch .oAutomatic selec ti on of upper and lower sideband

by the BAND switch. SSB NORMAL andREVERSE pos itions on MODE sw itch.

oCW NARROW and WIDE positions, allowing nar­rowband op eration on CW with the optional YK­SSC filter - a low-pass audio f ilter is inse rted inthe CW positions .

oFSK position for RTTY op eration , providing a170-Hz frequency shift.

8 . RF speech proces sor.olncreases av erage audio level and av erage

transmit power by maintain ing consta nt IFamplifier output independe nt of the microphoneoutput.

oSelect able SLOW and FAST time co nst ants.SLOW lIong) time constant prov ide s more naturalaudio, whereas FAST (short) in creases ta lkpower.

9. Dual SSB IF cr ystal fi lter systemoSecond filter (YK -SSS) is opti onal. IF circuits are

common far both transmission and recept ion .- Imoroves signal-to -noise ratio and incr eases

selectivity.• Providas excellent audio compression whentransm itt ing , w hi le preventing sideband expan ­sion (sp lat te r).

4

10. Tunable noise blanker ladjusts noise-samplingIrequency.)

11 . Dual RIT (receiver incremental tuning). Operateson VFO and FIX /MEMORV posltlons, withseparate concentric controls.

12. Variable-pitch CW sidetone (internal adjust­rnentl ,

13. IF SHIFT moves passband away Irom interl eringsignals.

14. Fixed channel (for net and similar applications).when crystal is added. IUser supplied).

15. Buil t -in VOX circuito-Automat íc tr ansm ission by vo ice. VO X GAI N and

DELA V controls on l ront pan el.oSem iautomat ic key ing on CW. Tim e co nst ant

automat ica lly 1/2 sho rte r than on SSB.

16. Variety 01 rear -panel provisions:IF OUT 1, IF OUT 2 .. lor observing w avelormsXVTR term inal lor transvertersACSV terminal. lor lin ear amplilier and

other optional accessori esEXT VFO term inal. .. I or external VFORF ANT l or a separate receive

antennaKEV te rminal. l or CW keyRTT V term inal. lor rad ioteletype FS K

operationSP term inal. tor ex t ernal speak erANTI VO X control. .. I or antitrip 01 transm it

from receiver audio duringVO X ope ration

17. Full line 01 matching accessories .oPS-30 base-station power supply .oSP-1 BO external speaker w it h selectable audio­

filters.oVFO- 180 remote VFOoAT - 180 an ten na t u ne rl SW R and power

meter/antenna sw itchoDF-1 80 Digita l Frequ ency Control (if TS -1 8 0 S is

purc hase d without DFCIoVK-8 8 C CW l ilteroVK-8 8 S SSB lilter

5

ª,~"",.~"" .•""•.•",,,.•,,,,,,.,,,,•.••~ ,, .•",,•.•,,,, •. ,,,,, •. ,,,,,, .,,,,,"""" ""~' ·'''~ ' ·~ ''''·~''''· '''''' ·' "''' · 'H''' ·''''~ ·'''''' · ' ''~", ~"" ,,, ,,, ,,,,,,, ,,,,,,, , ,"", , ,,,~, - ,,,,, , ,~~,, ,,,,,~ ,,,,, ~ , ,,,~" '''~' ' '~' ''' '''~' - '~~ ' ' ''''' ' '''' '','''".·,''".·....,•..,,1

f""'~""""~"I'~'"'~'"W'"'~~"""""'I'I"'"'~""'",""~" "","""" ••"".,",~" ",.~"""""""",, ,,""""'~'~""""" " """ """ "~ " """"" ~ 'H"""" " "" '~"" 'H"""" """ """ """ """ " "" ••"

SECTION 2 INSTALLATION

2 . 1 UNPACKINGRemove t he TS-180S trom its shipping box andpacking ma te ria l and examine it for visible damage. Ifthe equipment has been damaged in shipment notifythe transportat ion company immediately . Save theboxes and packing materia l for f ut ure shipping ormov ing.

The following accessories are furnished with theTS- 180S transceiver :

t he TS-180S is turned OFF. and the stand-by switchis in the REC position . Connect the POWER co rd toan appropriate external power source such as thePS-3 0 or an automobile battery .The rear panel power connector has a polarizedmating receptacle ,See Figure 2-1 lb) for proper connections.CA UTl ON: Be sure to wire the power connector ex­actly as shown to avoid damage to the transceiver.It is recommended that # 1 2 st randed w ire be used

2 .3 POWER CONNECTIONSMake sure t he POWER switch on the tront panel of

2 .2 OPERATING LOCATIONIt is preferable to choose an operating locatio n that isdry and coo l, and to avoid operating the t ransceiverin direct sun light .Al low adequate vent ilat ion , particularly duringmobile operation.

Double wrrinqbotn G)&e

POWER PL UG WIRING

XCVR int erna! wi ring lO PS-3 0

BLACK. GRAY POWER SWITCH

~------<>--.,,--- 8 •(exccpt tmar

crrcurt l

<±)

( 8)

IOOW

REDWHITE

111162

Inst ructi on ManualMicrophone Plug7P DIN Remot e PlugOC Power ConnectorCrimp Style TerminalPlast ic Ext ension Feet with Screws

Fig.2-' (b) Power Connector Wiring

TTY AT - 180GLOSEDLOOP

I r~o l OB r O O OL1GHTNINGARRESTOR ANTENNA TUNER

SP - 180

~o.:SM - 220

~ . O Oo O CD

VFQ - 180ps - 30

[]KEY

PQWER SUPPLY

(a) Front and Rear Panel Connections

HEA OPHONEHS- 4HS- 5 Fig .2- '

MIGROPHONEMC~ 50

6

to wire the power connector directly to the vehiclebattery , and that a fuse or circuit breaker rated at 20amperes be installed in the positive supply line closeto the battery .

2.4 ANTENNAFixed Station - Any of the common antennasy st ems designed for use on the high-frequencyAmateur bands may be used with the TS-1S0S . Thetransmission line should be coa xial cab le, and th eante nna system should show a standing wave ratioof less than 1.5: 1 when usin g 50 ohm co axialtransmission line. If open wire or balanced transmis­sion line is usad, a suitable antenna tunar is recom­mended between th e transcei ver and the f eed line oCon struction and operating methods for such tunersare described in deta il in the A RR L A nrenna Hend­

book, and similar publications. For operation on the7 5 and 40 meter bands, a simple dipole antenna, cutt o resonance in the most used portion of the band,w ill perform satisfactorily. For operation in the 10,15, and 20 meter bands, your stations efticiencywill be greatl y enhanced if a rotary beam antenna isused . Remember that even the most powerfultran sceiver is useless without a good antennasyste m.If the ante nna system SWR is too high, the resultmay be damage to the final transistors or deteriora­tion of transmit signal quality. Make sure that theantenna syste m SWR is less than 1.5 :1. If it cannotbe reduced to less than 1.5:1 , use of an antennatuner IAT-1S01 is recommended .

Mobile Station - Mobile antenna installations arecrit ica l, since any mobile antenna ter use on thehigh -frequency bands represents a number of com­promises. Many Amateurs lose the efticiency of theirant enna through improper tuning . Remember thefollowing points when using th e TS-l SOS with amobile antenna.

The " Q" of the antenna loading coil should be ashigh as possible. There are several commercialmodels available which use high " Q " coils.

The loading coil must be capable of handling thepower of the transceiver without overheating. In theCW mode the power output of the transceiver w il lexceed 100 watts.

The SWR bridge is a useful instrument, but unfor­tunately it is quite often misunderstood, and over­rated in importance. Basically, the SWR bridge willindicate how closelv the antenna load impedancematches the transmission line. With long transmis-

sion lines, as used in many fixed-station installa­tions, it is desirable to keep the impedance matchfairl y close in order to limit power loss . This is par ­ticularly true at the higher frequencies. The longerthe line , and the higher the frequency, the more im­portant SWR becomes. However, in mobile lnstalla­tions the transmission line seldom exceeds 20 feet inlength, and an SWR of even 4 : 1 adds very littlepo wer loss. The TS-1S0S final st age is, however,equ ipped with a built-in protection cir cuit whichdetects the SWR of the antenna system and lowersthe transmit power output t o about one-tenth whenthe SWR exceeds more than 3: 1. Therefore, makesure the SWR of the antenna system is less than1.5 : 1. If the TS-l SOS is to operate into an antennasyste m w here the SWR cannot be made less than1.5 : 1, an antenna tuner (such as the KenwoodModel AT-1S01 should be used . By using an antennatuner, matching between the tran sceiver final stageand the ante nna can be opt irnized , and the TS-l SOScan be operated safely at full power.

The really important factor w ith your mobile antennais that it should be carefully tuned to resonance atthe desired operating frequency . The fallacy in usingan SWR bridge lies in the fact that it is sometimespossible to reduce the SWR reading by detuning theantenna. Field strength may actually be reduced inan eftort to bring SWR down. Since field strength isthe primary goal, we recommend a field-strengthmeter ter antenna tuning .

For antenna adjustment s, the transceiver should beloaded at minimum power, using the RF PWR controlinstead of operat ing at full power output, This w illlimit f inal-staqe transistor dissipation during ad­justments, and will also help t o reduce interferenceto fellow operators. In any case, do not leave thetransmitter on for very long at one time. Transmitjust long enough to tune, and get a field-strengthreading . Start with the antenna at the center of itsadjustment range and ob serve the ñeld-strenqthreading. The field-strenqth meter may be set on topof the dash, on the hood , or at an elevated locationsome distance from the car.

Change the whip length one -half inch, and againcheck the field strength . Continue this procedure un­til the point of maximum field strength is found. Thisadjustment will be most critical on 75 rneters,somewhat less critical on 40, and on 10 meters theadjustment will be quite broad. After tuning theantenna to resonance , the finals can be loaded to fullpower.

7

Since this jack is connect ed to a low-v oltageswitching circuir. a relay should be inserted in theteletypewriter closed loop for keying operation .

seen from the ooro.

2.5 MICROPHONE

Attach the rnicrophone connector to a suitablernicrophone, as shown in Figure 2-2 . Be sure themicrophone PTT switch is separate from themicrophone circuir. as shown in Figure 2-3.It should be noted that a microphone with a 3P plugusing a common ground terminal should not be used.

The microphone input is designed for 500 to50 kohm microphones. The choice of microphone isimportant for good speech qua lity, and should begiven serious consideration. The c ryst al lattice filterin the transceiver provides al! the restrictionnecessary on audio response, and further restrictionin the microphone is not required. It is more irnpor­tant to have a microphone with a srnooth , flatresponse throughout the speech range .

Follow the microphone manufacturer's instructionsfor connecting the microphone cable to the plug .With many microphones, the push-to-talk buttonmust be pressed to make microphone audioavailable . For VOX operation , this unwanted featuremay be eliminated, if desired, by opening themicrophone case and permanently connecting thecontacts which control the microphone audio .

Fig .2-2

Mrcr ophone

Microphone Connection

Mrcropoone

IDé ª¿

(a) THIS

'"1 S Witch

~ Swuch

Mrcroono ne

jDé 9Malchmg transtor rner

(b) NOT THIS

Mrcr ophone

IDé ª 6(e) NOT TH IS

;¡ SWitch

2.6 KEY

If CW operation is desired, connect a key to the KEYjack. Use shielded cable, and a standard (mono or2Pl phone plug.

2 .7 EXTERNAL SPEAKER ANOHEAOPHONES

Receive audio output from the TS -1 SOS is 1.5 wattsat 4 to 160hms. The TS -1S0S has a built-inspeaker. An external speaker may be connected tothe SPEAKER jack on the rear panel. The speakermay be an S-ohm permanent-magnet type, 4 inchesor larger. The internal speaker is disconnected whenan external speaker is used. Headphones should alsobe 4 to 16 ohms impedance. When the headphonesare connected to the front-panel PHONES jack. thespeaker is disabled.

2.9 GROUNO

To prevent electric shock, and reduce the possibilityof TVI and BCI, connect the transceiver to a goodearth ground through as short and heavy a lead aspossible .

2.8 RTTY (FSK)

For RTTY operation, connect a teletypewriter to theRTTY KEY jack on the rear panel of the transceiver.

S

Fig . 2-3 A Microphone Suitable for PTT andVOX Operation

~.""' .."." .."." ..""'..""•.."....'''••..".......''•...,.,•.·,It.,.·,.,",·,'".,·,"'••·.II.'.·'''...·.,,',.·,',.,,·,'."...,'"...,,',..,"",-.,"',...,",.,"',...,",...,'" ..."".-."" ..."" ...,." ...,.,•...,."...".,..","..,,,,,,..,,.,,_.,,,,...,,.,...,••,...,,,,._.,.,,,.,,,"..." .~

SECTION 3 CONTROLS AND THEIR FUNCTION~"" •. ,,,,,,....,,•.,,,,••.•,,,,•.•,,,,,.,,.,,,.,,,,,•..,,,,,.,,,,,•.,,,,,, -,""•.""'•.•""•..""..•"".-.""•.•""•.."".-"'".-."".-.,,',,...,,,, .,,",, .,,",...,,,,•...,,,•.,",,•.,,",, ..,,,,...,,,,...,,,,...,,,,...'"" ..""..."'"..""•. ,''',•. ,,',,. "",.··"".· ,,,,,.·.,,,,.·,,,1

3 .1 FRONT PANEL CONTROLS1 METERThe meter monitors six different funct ions, depend­ing on METER switch position . In rece ive the meteris automatically an S-meter, and shows receivedsigna l streng th on a sca le of O to 40 dB over S9 . Intransrnit , met er function depends on the switchposition, as described be low.

2 METER SWITCHThis determines the transmit meter function :

A LC: (Automatic Level Control) - Thi s positionmonitors internal ALC voltage , or the ALCvo ltage feedback from a linear amplifieroperated with the TS-' 80S. For SSBoperation the ALC reading for vo ice peaksshou ld be within the A LC range. Reduc ingthe RF Pow er control INCREASES t he ALCread ing. IThis f unc t io ns simi larly to the RFGain co ntrol.)

IC: ICo llector Current) - This monitor s the finaltransistor collector current . Th e metersca le is ca librated fr om O to 20 A .Note: Fin al transistor IC co llector currentsho uld be read on t he O - 20 A sca le .

RF: (Output Pow er ) - Thi s monitors the relativeou tput po wer. (No separat e sca le is prov id ­ed for this position. )

COMP: This indi cates speech processor compr es­sio n level. Al w ays operate within thet 5-d B range, for both Fast and Slo w Com­pressio n. (30 dB range wi t h optional 2 ndSSB f ilter installed.)

V C: This monit ors t he pow er-supply voltage.The me te r sca le is calibrate d from O t o20 V DC .

3 RGC/ATT INDICATO RIRF AGC/ATTENUATOR)

This LED (Iight em itting diode) is illuminated whenthe RF ATT switch is t urned ON, or when the RFA GC circ uit is operat ing . (Operation is autornatic ,and on ly when needed.)

4 VFO INDICATORThi s LED illuminates w hen t he internal V FO controlsthe t ransceiver 's operat io n . Th e indi cat or is no tIighted durin g MEMORY, FIX channel, or rem oteV FO operation,

5 FIX /M INDICATORThis LED i1 lumin ates w hen the FIX or me mory c ircuitis ON .

6 PRO INDICATORThis LED lights w hen eit he r pro tect ion circuit is ON.

7 RIT INDICATORThese LEDs illum inat e when the RIT circuit (V FO orM EMORY) is ON, showing that t ransmit and receivefrequencies may be different.

8 ANALOG DIAL SCALEThe mono-sca le perrnits di rect analog frequencyreadout over the O to 500 kHz range, graduated atI -kl-lz intervals . Operating frequency equals t he di al(in kHz) plus the BA ND switch frequency (in MHz)An additional 50 kH z both above and be low the500 kHz range is also covered.

9 DIAL CA Ll BRA TE KNOBUse this knob to ca librate t he d ial scale read ing . Itsho uld not be used for t uni ng.

10 MAlN TUNING KNOBThis co ntrols th e V FO, selecting the transceiver ' soperat ing f requency . Th e indented kn ob is con ­ve nie nt for qui ck t uning .

1 1 STAND-BY SWITCHThis three-posit ion lever switch selec ts :

REC: The t ransceiver is receiv ing un less themi cr ophone PTT switch is keyed totransmito

VOX: In t his position, the VO X c irc uit is t urn ed onfor Voice Operated Transmit in SSB, orsemi-automatic break-in operat io n in CW.

SENO: The TS-'80S is locked into the t ransmitmode in t his switch position .

12 COMP SWITCHThis switch is used t o select speech pr ocessor t im econstants; SLOW or FA ST.

13 NB SWITCH

With the leve r switch UP, t he noi se-bl anker ci rc uit isturned ON, red ucing pulse-type noise.

14 RGC/ATT SWITCH (RF AGC/ATTENUATOR)

With t he switch set to ATT, a 20-dB attenuator isinse rted in the ante nna circuit, protect ing the RFampli fie r and mixer from input overloa d on strongsigna ls. The RF AGC fun cti on is a val uable anduni que feature of the TS- ' 80S. It prevents f ront-endoverloa d (a problem cont ingent to many trans­ceiv ers) . When the RF A GC is act iva ted by anadjacent-channel sig na l, t he S-m et er readin g for th e

9

@ RIT SWITCH (FIX�M)------------------~

@ RIT SWITCH (VFO)------------------~

@OSP/ OIFF SWITCH-----------------~

Q)RIT INDICATOR---- - - - - - ---- - ---...,

@ PRO INDICATOR-------- ----------,

@ FIX/M INDICATOR------------~

@VFO INDICATOR --------------,

~RGC/ ATT INDICATOR - - - - - - - - -,

(j) MET ER

lZlMET ER SWITCH

.---------- @ MIC GAIN

.-------@ DSP/ MI SWITCH

.---- -- @ RF PWR CONTROL

.----- - @ M.lN M SWITCH

~-- @ DEL AY CONTROL

r--- @ DOWN( M.SHIFT)

3 vox GAIN CONTROL

@ UP( M.SHIFT)

@ NB TUNECONTROL

@ MIC CONNECTOR

@ POWER SWITCH

@ PHONES JACK _ _ ---.J

@ STAND- BY SWITCH ---'

@ COMP SWITCH ..J

@ NB SWITCH .J

@ MODE SWITCH -----­

@ RGC/ ATT SWITCH - - - - - - -

@ AGC SWITCH--------­

@ DIAL CALl BRATE KNOB--- - - - -

@ MAIN TUNING KNOB ---.J

@ ANLOG DIAL SCAL E - - - - - - - - - - - - - -'

@O.S SHIFT

L----@ RF GAIN

l-- @AF GAIN

l----@ BAND SWITCH

l---- - @JI F SHIFT CONTROL

L----- @ DRIVE CONTROL

l----- ے)FIX/ IM. RECALL SWITCH

L-----@ RIT CONTROL ( FIX/IM)

l-- @ RIT CONTROL(VFO)

L, ªXMIT SWITCH

L- @ RCV SWITCH

10

Fig. 3- I Front Panel View

in-channel signal will be red uced .

15 AGC SWITCHThis controls t he AGC (Automatic Gain Control) cir­cuit:

23 DELAY CONTROLTh e DELA Y control adj usts the hold t ime lor VO X orbreak-in CW operat ion . A dju st lor indiv idualprelerence.

18 MOOE SWITCHThe MOOE switch selects tvpe 01 emi ssion.

17 MIC CONNECTORThe lour pin connector allows use 01 a PTTmicrophone. Figure 2-2 shows plu g w iring .

16 PHONES JACKThe headphones jack allows use 01 a 4 to 16 oh mheadphone through a 1/4 " phone plug . Whenphones are used the speaker is disconnected .

OFF:FAST:SLOW:

AGC disabled (no AGC).Normally used lor CW operation.Normally used lor SSB operation.

24 VOX GAIN CONTROLThis controls sensi tivity 01 the VOX (Voice Operat edTr ansmit l circuit o

25 NB TUNE CONTROLThis controls tuning 01 the NB ci rcuit input within therece ive r IF bandpass Irom the Mixer output .

26 RIT SWITCHES IVFO ANO FIX/MIThese push switches activate th e RIT (Receiver In­c remental Tuningl circui to The RIT indicators il­luminate w hen the appropriate RIT is ON. By ad­justing the RIT co nt ro ls, the VFO rece iv e I requencycan be varied ± 2 kHz, and the l ixed-channel andM emory Irequ ency by ± 1.5 kHz, wit ho ut chang ingthe t ransmit I req uency.

CW: Used l or CW operat ion. A high-cut lilter isinsertad in the receiver audio circuit toreduce unwanted noise.NAR - (NARROW) opt ional CW l ilter YK­88C selected.W IDE - SSB lilter selected l or WIDErece ive bandw idth.

SSB NORM :Used lor SSB operat ion. Th e 14, 21 and28 MH z bands are automat ica lly switchedto USB, and the 3 .5 and 7 MHz bands toLSB

SSB REV:For reversed mode SSB operat ion .

FSK: For narrow-shift RTT Y operation with ateletypewriter.

19 POWER SWITCHControls power ON and OFF to the TS-180S.

20 OSP/DIFF SWITCHDepress this momentary (non-Iocking) switch lor theDISPLAY/M EMORY lunction.

21 MIC GAINThis adjusts M IC amplilier gain du ring SSB oper­ation . Adjust t o prevent met er dellection beyond the1 5-dB indication on the COMP sca le.

22 RF PWR CONTROLThis controls transmit power continuously betweenapproximate ly 10 W and lull out put,Note:This co nt ro l lunction s in ALL modes.

27, 28 RIT CONTROLSVFO Iinner}. FIX/M (outerl

These are used to change receive I requency whenth e RIT is ON. Th e center (O) posit ion equa ls no shil t .

29 DRIVE CONTROLThe DRIVE Tuning control resonates the receiver'santenna and mixer coils, and is tuned fo r maxim umsensitivi ty Imaximum S-met er de llectionl . Int ransmit the DRIVE control is adjusted l or a max­imum RF reading. When correctly tuned lor transmis­sion it will also be correctly tuned lor reception .

30 IF SHIFT CONTROLDuring reception, the center Irequency 01 the IFcrystal lilter can be shifted ± 1.7 kHz l aci litati ng ad­justment 01 tone quali ty, or eliminating interlerencelrom nearby f requencies. For normal operation, setto the center detent position (c lick stop) .

31 AF GAINTh is adjusts receiver audio level. Volume increasesclockwise .

32 RF GAINThis adju st s receiver RF am pli lier gain. Turn lullyc lockwise lor maxim um gain and a correct S-meterreading,

33 BANO SWITCHThis co ntinuous rot ary switch selects all cir cu its t op lace the transceiver on th e desired band .

11

340.5 SHIFTFor 28 and 29-MHz ope ration, this selects a0 .5-MHz (500-kHz) shift for 28 .5 and 29 .5-MHzcoverage.

35 DSP/M1 SWITCHThis momentary switch wi ll display t he memory ift he DSPIDIFF button is depressed .Notes.1. Th e M 1 memary is available on ly to the TS- l 80S

with DFC.2. The following switches 136 through 411 are

operativa only far the TS-180S with DFC.

36 M . IN M SWITCHThis locking switch is used to memorize frequenciesin the M, M' and /or M" position of the FIX/MRECALL switch.When a f requency is memorized, (when the!Mlswitch is depressedl a short tone so unds to in­dicate data entry.

37 DOWN (M . SHIFT)This switch is used to change a memory freq uencydownward. When used along with the UP switch,fast-forwarding downward is avai lab le.

38 UP (M. SHIFTIThis switch is used to change a memory freq uencyupward. When used alo ng with the DOW N switch,fast·forwarding downward is available.

39 RCV SWITCHThis switch should be turned ON when receiv ing ona memory or FIX channel frequency .

40 XMIT SWITCHThi s switc h sho uld be turned ON w hen t ransmittingon a memory or FIX channel or f reqeuncy.

41 FIX/M. RECALL SWITCHThis switch is used w hen reca lling a memory or FIXchanne!. The app ropriate RCV or XMIT switchshould also be used to receive or transmit o

3 .2 REAR PANEL CONTROlS ANDCONNECTORS

1 POWER-SUPPLy CONNECTORThis six-pin connector supplies OC POW ER to thetransceiver.

2 X VERTERTh is DIN connector is used t o interface a VHFtr ansverter. ISee Fig . 5-4 .)

12

PIN FUNCTION PIN FUNCTION

1 Ground 5 Transverter in

2 Relay Voltage 6 Transverter ALe input( + on transmit)

3 Ground 7 Transverter out

4 + 13.8V 8 HF ANT outputIRelay control)

3 ACSY CONNECTOR (FOR OPTIONA L EXTER­NAL ACCESSORIESI

The ACSY connectar is used to interconnect a linearamplifier or other accessory item. (See Fig. 5-3 )

PIN FUNCTION PIN FUNCTION

1 REC. out 5 Normally closedrelay contact

2 Aelay camman 6 ALC-feedbackterminal ALC threshold level

approx . -6 V

3 STSY control 7 Ground

4 Normally apenedrelay contact

4 CW KEY JACKUsing shielded line, connect a key to this 1/4 ' phonejack for CW operation , Key-opened terminal voltageis approximately + 4. 5 V.

5 RTTY KEY JACKFor FSK operation use a 1/8 inch plug and an isola­t ion relay connected to the te letypewriter switchingcircuito

6 SPEAKER JACKReceiver aud io output can be connected through thisjack to an external 4 to 16 ohm speaker. The internalspeaker is disconnected when an external speaker isconnected .

7 ANTENNA CONNECTORThis SO-2 39 coax connector should be attached to asuitable 50 n antenna for transmitting and receiving.

8 EXTERNAL VFO CONNECTORTh is DIN co nnector is used to interface the KEN­WOOD VFO -1 80 ex ternal VFO. Th e interconnect ingcable is provided w it h th e VFO- l 80.

QDEXTERNAl VFO CONNECTOR--------,

@ SPEAKER JACK -------..

@ ANTENNA SWITCH -------,

QJANTENNA CONNECTOR

..

l '

@ RTT Y KEY JACK --------..

@CW KEY JACK --,

@IF OUT JACK I

@ ACSY CONNECTOR Q!JGND lUG

<í)X VERTER CONNECTOR-----" @IF OUT JACK 2----'

@ ANTI VOX CONTROL --------' I@J RX ANT - - - - - - - ......J

(D POWER-SUPPY CONNECTOR ----/ @ PREDRll l ED HOlE FOR OWNER USE- - - - - - - - ---'Fig. 3 -2 Rear-Panel View

PIN FUNCTION PIN FUNCTION

1 VFO signal 5 VFO control

2 Relay voltaqe 6 No connection(+ on transmitl

3 + 8 V 7 Ground

4 No connection 8 + 14 V

11 , 12 IF OUT JACK 1, 2IF OUT 1: A Buffered Mixer output for pan display

use . Thi s is a wide-band, low-Ievel IFsignal.

IF OUT 2 : A high-Ievel , narrow-band IF output,t aken before t he RX Produce Oet ect or , forsco pe disp lay o f received si gn alwaveform .

9 ANTENNA SWITCHThis switch remains in the NOR posrnon whenusing a single antenna tor receiving and tran smitt ing.Place the switch in th e RX ANT position whenseparata rec eiv e and transmit antennas are usad.

10 RX ANTUse this RCA phono jack t o co nnect a recervmqant enna wh en separata transmit and receiv e anten­nas are usad.

13 ANTI VOX CONTROL (ON THE REAR PANEL)Adjust the co nt ro l to prev ent spe aker output fromtripping the VO X .

14 GND IGROUNDI lUGTo prevent electric shock, as w ell as RFI and BCI,connect th e tr ansceiver to a good eart h ground .

15 PREDRlllED HOlEFor ow ner lnstalled switch or input/output connector .

13

~'''' '' '''''' ''''''''''''''''''''''''''"''''"'''''''' '''''' '''''' '''''' ''''S'ECT'¡'O'Ñ" "¡""'"OPE'RATI'O'Ñ '''' ' ' ' '' '' ' ' '''' ' ''''' ' '"' '' ' '' '' ' " "" ' '' '' ' ' '' ''' ' ' ''' ' '' '"' ' 11;...".._ ,,, , ", ,," " - " "" ",,,..,,',, .,,..,.-.."' ,,, ,,,, ,,., ,.., ", ,,, , ,,., ,, ,,", , ,,"',.".."..,", ,., ".,.-., -..,',..,",..,.., ,,,,,, .,,;

4 .1 PRELlMINARY PROCEDURESet the RF PW R control to zero (to prevent acciden­tal transmit before tuning) and the M OOE switch toSSB or CW. The TS -180S must be operated into a50 ohm antenna or dummy load w ith an SWR lessthan 1.5: 1 . Random length wi re antennas or light­bulb dummy loads cannot be used . Conventionalha lf-wave dipol es and beam antennas should on ly beused at or near their resonant frequency . Exceedingan SWR of 1. 5 : 1 can da mage components in theoutput stage .

Be sure to have completed all required cabl ing asdescribed in Section 2 .

W ith a suitable antenna and microphone (or key)connected to the transceiver. place the T S-180Sswitches as listed in Table 4 -1 .

proper signal strengt h read ing. Turning th e controlcount ercl ockw ise reduces the RF GAIN, reducingsignal strength and ban d noi se .

Note: Make sure that a co ntinuous or inte rrnittentbeat can be heard on each band w hen the main dia l isset at the O and 500 kH z posit ions .Th is is normal and not a malfunction because thesebeat are internal beato

4 .3 READING THE OPERATINGFREOUENCY

The dial sc ale indicates exact ca rrier frequencyregardless of mode, and directly in dicates transmis­sio n and reception fr equencies except for the CWreceive mode (in which act ual fr equ ency is approx ­im at ely 800 Hz higher than t he d ial readout.l whichindi cates the BFO f req uency.

TABLE 4 -1 . Initial Receiv e Switch Settings

The remaining control s do not affect reception andmay be in any position .

4.2 RECEIVER TUNINGTurn the POW ER switch on. The meter, dial sca le,and VFO indicator will light ind icating the transcei veris operat ing. Th e transc eiv er is fu ll sol id-stat e allow­ing immediate reception. Advance the AF GAIN co n­trol clockwise until sorne receiver noise is heard inthe speaker. Adjust the main tuning until a signal isheard . Tune for the clearest possible rec eption, andthen adjust the ORIVE control for ma ximum deflec­tion of the S-meter.

CONTROL

BANO SwitchPDWER Switch

Stand-by Switch

NB Switch

RIT Sw it ch

RF ATT/RGC

FIX/M Sw itch

AGC Sw itch

ORIVE

MDOE Sw it ch

RIT

AF GAIN

IF SHIFT

RF gain

POSITION

Desired bandOFF

REC

OFFOFF

OFF

VFO

SLOW or FAST

Peak tor ma x " S" reading

SSB or CW

Cente red

full y co unt ercl oc kwise

Cent eredfull y clockw ise

Th e digital fr equency readout gi ves the actualtransmission frequency. In the CW MOOE, receive totran smit shift is indicate d . In the FSK mod e the tun ­ing dial indicates a transmi ssion frequency (space)approxima t ely 2.2 kHz higher than th e act ua ltransmi ssion fr equ ency , w hile th e digital readout in ­di cates true fr equency.When there is any di fference bet w een th e ana logand digital rea dout , calibrate to the digita l readout bymeans o f the Cal ib ration knob .

¡ '" "... ... ~~~ ::lEc . ' '0 ' ",..... 'o o o o @ © @ @ @. " " <oC '" " . e",

I J LJ J n c ,-, ¡ r -... .-----Y IN -----, ,....- ... :;..oII'"T ---,

I • I 1 _',1.1 ID ;~1S'0' 00.... .....

O DD. ..~ " "'"J ",,,,, o-,.~on " -0- ". ~@J G@Yrca'l ». ~ '".. ~ '

1 .6 '---; ",",,,.. . 'D"@- " 1<- ~, ·u· "'- 0'-'

G) .: ""

\ .....,Dial Readlng 175KHzThe ooerennq trecucncv 01 tne transcerver .s the sum01 tne band trequerc v ero dial reao.rq fteouercvE xamore: Band switch I"MH zOoeretmq Fteouerc v: 14, 000· 175'= 14,1 75kHz

Fig . 4 -1 Reading the Operat in g Frequency

The RF GAIN control varies th e AGC feedbackvo ltage w hich effects the S-m eter reading. W it h theRF GA IN co ntrol fu lly c1ockwise, t he S-m et er g ives a

14

4.4 DSP/DIFF SWITCHDep ress this momentary switch for theDIS PLAY/MEMORY function . When depressed, allMHz figures are blanked, w hile kHz f igures only aredisplayed . At the same time, O O O O appears at t hedisplay w indow (left) . When using the TS-18 0 S inthe display/memory rnode, also depress the DSP/M 1momentary switch .

4 .5 DSP/Ml SWITCHTh is momentary switch is used to display memoryafter depressing the DSP/D IFF button . The kHzf igures displayed at the right side of the windowmove to the left, and O O appears at the right. Whenthe main tuning is turned c1ockwise, the left displayholds, while the right display figures rise . Th e firstf requency is now memorized at the left . W it h thisfeature , you can change frequ ency up or down whilekeeping the original fr equ ency displayed. Thisswitch can also be used to me morize or hold t he firstf requency for lat er ret u rn . You can read how f ar fr omthe original freq uency you hav e shifted up or down.When th e main t uning is turned co unter-c loc kwise a- sig n appears and the di splay at right showsdecrease in fr equency . Th is means that when the

main tu ni ng is adj usted you can always read the dif­ference from t he original frequency . W hen t heDSP/M 1 switch is depressed an approximate 3 kHzpulse tone is heard , which indicates data en try . Byturning the ma in tuning kno b up or down, analgebraic sum of the right and left figures isdisplayed to the left , while O O appears t o the rig ht .When the DSP/DIFF switch is depressed, t he fullo riginal frequency is displayed. Fig . 4 -2 gives an ex­ample of this operation. A lso, depress this switch toread actual f req uency after shifting .

The f requencies displayed are algebraically summedand a full display is available . When the DSP/D IFFswitch is again de pressed, a differential display ofthe first frequency and the one shifted fr equ enc y ap­pears.

For example, assume a sta rt ing frequency of14.175.0 M Hz.

Pusn the DSP OIFF Swuch -

Push tne QSP MI SWItch ---

Lower lO lhe freQuency 25 kHz

•Tne trrs t treqoe rc vIS memonzeo Ooerenrq trequency

14, 150. 0 MH z::1 •• '-' ":JUU .LI

-¡-tne tnst treqcercv15 merncnzeu

/'750

Be.se tne freQuency 125 kHz

Pusf tne DSP OIFFSWitch .--_ _ ..J.._~

'V"' ;-¡ ", l. ~ '-' L.!.LI

P uSh ineOSP /DIFF SWitch

I/I'e""I 1. ':1 L' !-J

Push the OSP! OIF F

SWitchr=a"ga:..,"::...._ _ ..t.__-t

.ncn 1:15"I 13.U le . U

Push tne DSP/ OIFFS Witch aqam

1I1C,1 _:f ',- /'I , _'.'-' L _, L'

Fig.4-2 Digital Frequency Display Operation

15

4 .8 RIT

Using the RIT control , the VFO and FIX/M receivef requency can be shifted approximately ± 2 kHz, orthe fi xed channel frequency by about ± 1 .5 kHz,w ithout changing the transmit frequency. The RITswitches actívate both the LED indicators and theRIT controls .

transceiver switches from t ransmit to receive. Thi sis normal and not a malfunction.

4 ,9 IF S HIFT

By using the IF SHIFT during reception, the crvstal­f ilte r passband frequency can be shifted approx­imat ely ± 1 .7 kHz. This is achieved by use of a PLLIPhase- Locked Loop) in the L.O . (local oscillator) cir­cuit . This is a major feature of the TS-l 80S and canbe used in the following cases:

FullOtcckwrseposmon

AF ",---RFGA IN---;!.r--GAIN

~8J10

Turncounte rotockwise.

RF GAIN Control Ope ration

10 : :ro

"c-C :

1 9 '20 <le.W = "f'.~~

~ 15, ,~

4 V.A

40 "e

", o" o

COMP o

", o" o

COMP o

Fig .4-3

Maxu n um " S" mete r reading ofan moommo siqna!

Pointer deñectron wtthRF qam control adtus ted

¡counterC!OCkWlse. AF ~ RF

~_~~-+-'--~~_-, GAIN~GAIN

001:1S tqnals weakertnan this levelare au enuateo.

Turned in 8 crrecnon IF filter oassbanc Turned m ffi dnectron..-. cbaractcr tsnc ..

tntertemq srqnal

ORIVE~ IF SHIF T

Turn in Ee drrecuonto etimmate ínter­terence from siqnal @.

IF SHIFT Control

ORIVE --@--IF SHIFT

Fig .4-4

_~. o~+-w-

Inter fering srqnar

DRIVE --@-IF SHIFT

Turn m 8 onccnonto eümmate mte r­terence from siqna! (13\

1 . Adjustment of tone quality and interference re­jection during SSB Reception.

When the transceiver is on 20 meters andabove, Normal SSB mode, turn the IF SHIFT inthe " +" direction and the lower frequencies areattenuated . Turning the knob in the " - " direc-

4 .6 RF GAIN

RF GA IN is contr olled by changing the AGC circuitvolt age. Ad just the RF GA IN control so the S-meterdoes not deflect excessively. This minimizes noi seduring reception and sti ll allows the S-meter to in ­dicate correct signal strength . For normal operation ,the control shou ld be fully clockwise for maximumsensitivity .

4 .7 RF ATT. RGC POSITION

The input to the receive RF amplifier is attenuatedapproximately 20 dB, providi ng distortion less recep­tion . This feature may be used in cases of receiveroverload , caused eit her by a strong local signal, ordu ring weak signal recept ion when a strong adjacentsignal may blank the rece iver .W hen a st rong signal appears adjacent to the signalbeing received, place this switch to the " RGC" posi­tion, and the RF gain control c ircuit is activated toprevent cross modulation . The RGC function is ava luable and unique featu re of the TS- l 80S, preven­ting fr ont-end overload, w hich is a prob lem con­t inge nt t o many t ransceivers. When the RF A GC isactivated by adjacent-channel signals, the S-meterreading for t he on-channel sig nal will be reduced .Th e RF AG C detects adjace nt st rong signals at thefi rst mixer and automatica lly activates the PIN diodeattenua tor. W hen the RF AG C functions , cross­mo dulation at the first mi xer it prevented . When theRGC/ATT LED light s, it indicat es a st rong signal isoperat ing adjacent to yo ur ope rat ing fr equ ency , andthe RF AG C is operati ng to redu ce th is unwantedsig na!.Note: Th e RGC ind icator may Iight when the

16

tion cuts the higher f requencies. (These pro­cedures are reversed tor Norm al SSB operationbelow 20 meters.) Adjust the control to yourlistening preference. The IF SHIFT is also effec­t ive in eliminating interference from adjacentrec eiv e signals.

2. Ad justment of tone quality during CW operation.

For detailed descriptions, refer to Section 4 .1 5" CW operation" .

3 . FSK (RTTYI operation at 170-Hz shift.

For detailed description, refer to Section 4.17" RTTY operation".

4 .12 TRANSMIT OPERATIONConn ect the TS-l 80S to a 50 ohm dummy load orantenna system w it h an SWR of less than 1.5 : 1BEFORE making any transmitter adjustments.

CAUTION: The TS-l 80S is designed lor use withantenna systems having a nominal impedance 01 50ohms. It is very important that the wide-band l inalamplifier is operated efficiently. Antenna systemSWR should be made less than 1.5:' . For im­pedance matching between the antenna system andthe transceiver, we recommend use 01 the optionalAT-'80 Antenna Tuner.

4.10 NOISE BLANKERTh e TS-l BOS has a sophisticated built-in noiseblanker designed to reduce ignit ion tvpe pu lse noise,and is particula rly useful during rnoblle ope ration.

Refer to Table 4 -2 lor ini ti al transmit switch settings.Adjust the ma in tuning lor the des ired operating f re­quency.

Table 4 -2 . Initial Transmit Switch Settings(Controls not listed should be set per Table 4-' .)NB TUNE

The NB TU NE co nt ro l is provide d to change the inputtuning of the NB circuit within the IF bandpass, Itchanges up to plu s or minus 50 kHz, and selects andamplif ies noi se sig nals adjace nt to the receive fr e­quency. If a strong sig nal exs ists adjacent to thesignal received, th e AGC circuit wi ll redu ce both IFsignal and no ise co mp onents. Th is reduces NoiseBlanker effectiveness. Shifting t he input tuningaway lrom this strong sig nal im proves noise blankeroperation .

CONTROL

BAND SwitchPower SwitchStand-by Switc hMODE SwitchMETER SwitchRITDRIVE

POSITION

Desired bandONRECSSB NORM or CW WIDERF or IcOFFPeak l or MAX " S" IRX)or RF or Ic ITXI

Note 2 : By turning t he RF PWR contro lco unterclockwise, the A LC meter begins t o dellectand linally reac hes lull scale . This indicat es that theAL C level is va ried by the RF PWR co ntrol.(The S meter also deflects lull scale when th e RFGAIN co ntro l is adjusted co unterclockwise .)

4.13 RF PWR CONTROLThe RF PWR cont ro l is provided to adjust t ransmitpower cont inuously between approximately 10 Wand lull output . During antenna system adjustment,et c ., reduce power by turning this control counter­c1ockwise. If power is kept low , the linal protectioncircuit (which detects SWR I w ill not operate .

Note 1: Th is contro l lunctions lor all transmittermodes CW, SSB and FSK. To read ALC this controlmust be advanced lully clockwise . For normal opera ­tion, read drive tuning and transmit power on eitherthe RF or Ic meter scale. A LC read ing will changew it h SW R.

- FreQuenc y

- FreQuency

Frequency

Ad¡acent strorq Slgnal

-----

AdJacent strong stqna!

/'

NOIse AMP band wldlh

"oeSlred stqna!

\Desue d sqnat

fDesueo siqnal

Becerve bandwrdtn

NOlse AMP benowrdtn

4 .11 AGC (AUTOMATIC GAIN CONTROL)Set the AGC swit ch lor the tvpe 01 signal received ;gen erally l or SSB, SLOW, for CW, FAST, and lor aw eak signal, the switch may be turned OFF.

Fig.4-5 NB Tune Control

17

4 .14 SSB OPERATIONAdjust the TS-1S0S as described in Section 4.12and 4 .13. Connect a micro phone to the MIC connec­tor , Key the transmitter and speak into themicrophone in a normal tone of voice. Adjust theMIC control until voice peaks are just within the1 S dB COMP range on the meter scale. With theM ETER switched to the ALC position, readingsshould be within the ALC zone, or the transmitterwill be driven to distortion.

PTT OPERATlONBy using a microphone equipped with a PTT switch.the transceiver is ready for PTT operation. To key,depress the PTT switch . The STANDBY switch is leftin the REC position .

MIC GAIN CONTROLThis co ntro l adjusts the micro phone input level. Setthe mete r switch to COMP and key the t ransceiver.Speak into t he micro pho ne and adjust t he M IC GAINfor 1 S dB indicatio n on peaks . Th is lim it applies toboth FA ST or SLOW compression . The T S-1 SOS willaccept eithe r a low or high impedance microphone(SOO ¡¡ to SO k¡¡¡ .ALC Meter readingThe all-transistor Final has an A LC circuit which pro­tects the t ransistors and maintains uniform t ransmit­ter output.When the meter read ing is within the ALC zone, SSBoutput is distortion-free.

A LC level is preadjusted in the IF unit .The transmit IF ou tput is mai ntained constant bythe compression ampl ifiers in the IF stage.Therefore, ALC level remains constant evenwhen the MIC GAIN is adj usted through the levelat which the COMP circuit begins to operate .Use the A LC meter position to check Drive level.Use the COMP meter position to check MIC inputlevel.

Pomter sbouto no! oetrectbeyond 30 dB en peaks.

( a) ~b)~ 7 9 dBS 3 5 " , +20,

+4011 \ 105 11,1 \ \1 2

V, O10 \~~ V.A

" OCOMP O

~~O',

VOX (Vaice Operated Transmit) OPERATIONAdjust the t ransceiver as described in paragraph4 .14 . Place the STANDBY switch in VOX and, whilespeaking into the microphone, increase the VOXGAIN until the VOX just operates . For VOX operationit is desirable to clase-tal k the microphone to preventbackground noises from tripping the TS -1 SOS intotransmit mode. Check that voice peaks are stillwithin the 1 S dB COMP range on the meter. Ifnecessary, readjust the MIC GAIN.If the VOX circuir is activated by speaker noise, ad­just the ANTI-VOX control (on the rear panel) . In­c rease the control as necessary for proper VOXoperat ion. Excessive ANTI-VOX will inhibit VOXoperation.

Do not use more VOX or ANTI-VOX gain thannecessary. If the VOX circuit transfers betweenwords, or holds too long, adjust the hold time cons­tant by the DELAY control.

Note: In VOX operation. time co nstants changeautomatically for CW and SSB modes. The ha Id timeis sho rt for CW operation , and a Iltt le longer in SSBmode.

4.15 CW OPERATIONAdjust the TS-1SOS as described in Section 4 .12and 4. 13 . Connect a key to the rear panel CW KEYjack, and place the MODE switch to CW (WI DE orNAR). Place the standbv switch to SEND fortransmitting.CW sidetone is monitored through the transceiver'sspeaker.

OPERATlON W ITHOUT CW FILTERTo receive CW, set the IF SHIFT control to its centerposition and the RIT switch to OFF. Adjust the rnaintuning for about an SOO-Hz beat and your transmitfrequency will be tuned (zeroed) to the transmit fre­quency of the station you are receiving. Duringreception, the side tone is activated by the key (VOXoff) . In this case, listen to the side tone superirnpos­ed on the rece iv e signal and adjust the main tuningfor similar side tone and incoming CW aud io tone. Bydoing so, t ransmit frequencies will be zeroed . Youmay now adjust the RIT fo r a pitch which suits yourpreference. If interference is encoutered, adjust theIF SHIFT. For more convenlent and effective CWoperation, use of t he op tional YK-SSC CW fi lte r isrecommended .

¡ 8

(a) Wlt hin ISd8

Fig.4-6

(b) wutun 30dB( wrth use ot YK-88 S )

COMPLEVEL

OPERATION WITH CW FILTER (OPTION)Set the IF SHIFT to lts center posi t io n and th e RITOFF. Adjust the main tunin g for maximum S-m eter

• 5 V

~To K<.'y

KEV -..I~)l 2

~ I~ O

O O rn GND

O@ o

Betore connecnrq. check@ t ba t

e e oorantv 1$ cor rect Tne KE Y jack

Oorovroes ~ Sv . Use sruercco

@cable.

~

Fig. 4·7 Key Connection

deflection. Receive signal pitch will be aboutSOO Hz. indicating co rrect tuning .

KEY CONNECTION (Fig . 4·7)Your key shou ld be connecte d as illu strat ed in Fig .4 -7 . W hen using an elect ro nic kever. make su re th atpo lari ty is co rrec t. Use shielded lin e trom th e key totransceiver .

SEMI-BREAK-IN OPERATIONThe TS -1 SOS has a built- in side- tone osci llato r toperm it sem i-break-in operation, besides t he no rma lCW operat ion . Du ring semi -break-in operation , thetran sceiver is set in transmit mode when t he key isdepressed, and returns to receive mode w hen t hekey is released. For semi-b reak-in operation, placeth e STANDBY swit ch t o VOX . Adjust t he DELA Ycont ro l for your preference.

4 .16 OPERATION WITH A LINEARAMPLlFIER (See Fig, 5-3)

The ACSY connect or on the rear panel provides forint erconnect ion w ith an amplifier. See the ampli f ierinst ruct ion manual to determine whether th e linearrequires a normally opened or normally closed (dur­ing receivel relay contacto Connect th e amplif ier con­trol line to either pin 5 (N.C.) or pin 4 (N.O.duringrec eive) . Connect the Ground (Shield l of the ControlLine to Pin 2 and Pin 7. Connect amplifier A LC to pin6 of the ACSY connector. The TS-1 SOS output isquite adequate to drive most amplifiers to full rat edoutput.

4.17 RTTY OPERATIONFor RTTY FSK operat io n. a demodulator andteletypewriter are necessary . Th e demodulatorshould be des ig ned to operate from an audio inputand be equipped w it h a filter for 2 12 5 /229 5 HzINARROW, 170 Hz shift).

To key the FSK circuir, insert a relay coil into theteletypewriter closed loop circui t and connect therelay contacts to t he RTTY KEY jack on the rearpanel. Fig. 4 -S shows the relat ionship betweentransmit and receive frequencies. Sett ing the M ODEswitch to FSK automatically decreases final stage in­put power permitting extended operation .For AFSK or SSTV operation , signal may be inputt hrough t he M IC Jack. Set MIC GAIN or RF PWR forapproximately 50 % Duty (112 Power). Read eitheron the RF or IC meter position .

4.18 SPEECH PROCESSORThe TS - 1SOS Speech Pro cessor uses the receive IFamplifier as a compression amplifier during transmitoA separate AGC ci rc uit is provided in the transmitmode. The processor is always ON during transmis­sion . By changing t im e co nsta nts, nat ural feeling ismaintained when in SLOW by using a reasonablylong t ime constant , while the average power is in­creased in FA ST by employing a short t ime co nsta ntISLOW or FA ST) w it hout ma king ga in adjus t ment.Normall y , this sho uld be done at abo ut th e 10 dBco mpress io n level fo r bo t h SLOW and FAST ranges,but withi n 15 dB at t he maximum . High er levels ma ycause distort io n.If the optional 2nd SSB filter (YK-SSSI is inst al led ,favor able operation can be enjoyed up to 30 dSmaxim um compression in FAST, wi t hout expansi ónof side bands.COMP Meter reading .Compression level is adjustable with the M IC GAI Ncontrol .• When the optional 2nd SSS filter YK~SSS is not

used , compression level should be adjustedwi t hin 15 dB

• When the YK-SSS Dual Filter is used, compres­sion level may be adjusted up to 30 dB.

RECEPTlONCA R CW FllTEA

POSI1TlON )~B_ F~:'T ~~ ~

1 ' ( 1,I ' I I \I ' 1 I \I : 1 I \

I I ' 1 \: ' ! : \3828 88 29 88 30 883 1 8832 Ik. Hz)

MA RK (N ARRQW) SPAC E88 30 53 8830 7

Fig .4-S RTTY Frequency

19

Note: TRIO -KENWOOO doe s not supply crys t als .

To use the f ixed frequency oscillator, turn the FIX/MRECALL switch to the " FIX" posit ion .

Crystal Frequency (M Hzl = 6.6 MH z + X- OperatingFrequ ency (M Hz).

Bottom vrew cover 011

MIC AttenuationFig .4-9

T5-1805 IN5TALLATIO NSecure the TS-1 80S under the dash or on the f loorusing a mounting bracket . As an altemative, usest rapp ing, making sure that t he TS-180S will not slipout o f place while driving .

4 .22 MOBllE OPERATION (Fig. 4 -1 1)The TS -180S, being OC operated, is ideal for mobileoperation . Satisfactory mobile operation is achievedthrough proper power and antenna connection, andthoughtful transceiver insta llation and adjustment.

Note 1. If a high output microphone is used withoutattenuation, excessively high COMP will beindicated (more than 15 dBI even with theM IC Control at the 9 o'clock position . Usethe attenuator to correct this condition.

2. The attenuator is factory preset at O dB.

x = Band Sw it ch frequ ency (1. 5, 3. 5 , etc .lCrystal spec if icat ions : See Fig . 4 -10

4 .21 FIXED CHA NNEL OPERATIONA fi xed channel is available for common use on allbands by installing a crystal in the socket on the PreMix unit (X50-1 570-00) . The cryst al frequency canbe comput ed by the follow ing formula :

Note: When the thermal protection c ircuit IS ac­tivated, the transceiver decreases transmit poweruntil the heat sink cools .

1) 5WR OetectionAs the antenna system SW R rises , reflectedpower increases, making the load on the f inaltransistors excessive. When SWR exceeds 3 : 1(at 14 MHz) this circuit decreases transmitpower output ,

4 .20 MIC ATTENUATIONThe TS -1 80S is provided with a speech processorcapable of 30 dB maximum compression . Since thegain between the microphone and transmit IFamplifiers is quite high, microphone gain control forshallow compression with a high output microphonemay be difficult . In such cases, a 20 dB attenuatorcan be inserted between the microphone and inputamplifier. Th e changeover can be done by changinga jum per pin on the IF unit , as shown in Fig . 4 .9 .

• If compression level is in excess of these Iimits,deterio ration of transmit sound quality due tocom pression disto rtion will result .

• When SLOW COM P is selected, the meter returnsslowly . Thi s is normal and is not a malfunc t ion.

2) Thermal ProtectionThe TS-180S is furnished with a heat sink largeenough to dissipate final -stage heat. However,when final -stage temperatu ra rises abnormallydue to continuous transmission in CW. transmis­sion w ith an incorreet load or over long sessions ,this protection circuit detects the corete mperatu re of the final -stage transforme r anddecreases transmit power output ,Th is ci rc uit resets w hen the heat sink t emp era­ture returns to ambient level.

4.19 PROTECTION CIRCUITSTh e TS-180S has an all so lid-sta te fin al sta ge. Toprotect the f inal tr an sistors, t w o protection ci rcui tsare provided.

Note: If the protection ci rcuit operates . reduce theantenna SWR to at least less than 3: 1 IPROTECT IONSTARTING POINT) . If the ante nna system is tuned atfull power with an antenna tun er, t he prot ecti on cir­cuit may ope rate.8ef ore adjustment, turn th e RF PW R co ntrolco unterc lockwise to reduce t ransmitter output . Ad­just t he ante nna tuner for a 1: 1 SW R. Then, resumenormal operation.

20

Cr ys ta l Spec i f ica t ions

Type of holder: HC-25/ U

Frequocv :6. 6- 6 . I MHz ( in-Band operanon)

Mutnpncauon FundamentalTorerance : -o 0 .002% ( Nor mal tenpera ture)Oecacuarce :30P FLoe dm q :::i 4()Q

Orive rever : 2 mW

30P

f1

01 :25 C460(B)

ISOP

~ '"

02 :25C460 (B )

B+ 8V

0.01~

OUTPUT

Note:1. Do not install near the heater outlet.2 . Allow sufficient space behind the TS-1 80S to

ensure proper ventilation.HOW TO HANDLE THE POWER CABLEWhen connecting or disconnnecting the power cableto or lrom the power connector, be sure that thepower switch is always in the "OFF" position.Observe polarity 01 the cable . The TS-1 80S operateson 13.8 V DC. negative ground. 8attery polaritymust be correcto The power cord is color coded:CAUTION:Observe battery polarity.

Fig. 4 - ' O Crystal Oscillator Circuit

Loadinq coil

A nlenna A nte nna brack et m us! nevegood me tal lO metal conlac l

To AN T term T5- 1805

T5-1 805

Turn POW ER sw itch OFFbefare coo necunq/.disconnectmq the power co rd

Sm ce an HF antenna IS larqe and neavv . u mus! be mstaueo te wrtnstandstronq wmd stress

=

Pass coaxia l cable

through tne dram note

lEXTENSIQNI

Use fuse block. battery ac ­cesso ry postnon. 20A mini -

>r~';;;;;:;~::::~~;~::;~f8!-EJiU~NC Tlo~~m ratmgExample 01 pcwer COf d wmnq

~

P:: ' ~~-Anrenna bra ckat \must bave qooometa l to metalco ntac r

Bu mper mourtnnq

bracket

21

POWER CABLE

Red or WhiteBlack or Gray

+ (plus)- (rninus)

NOTES:1 . Some cars have a ur ethane bumper . For suc h

cars, ground the antenna mount t o t he bod y.2 . When tuning th e newly inst alled antenna, use

the RF PWR cont ro l for minimum transmit power.

First , determi ne that the ca rs pow er system (the bat­tery and ge nerator or alte rna tor) w ill hand le the in­creased load of the T S- l 8 0 S.Connect t he power cable to the battery terminals.with consideration to current requirements and noiseprevention . The maximum current drawn by theTS - 180S reaches to between 18 and 20 A whentransmitting. Th erefore , the cable should be as shortas possible. Rout e battery and antenna leads awayfrom all high vo ltage secondary c ircui t s to preventignit ion no ise interference.

MOBILE ANTENNA(1) Antenna InstallationHF antennas are larger, have more w ind load, andare heavier than VHF antennas. A bumper mount isrecommended for general use. The mount must beperfectly grounded to t he car body since the bodyit self functions as t he ground plane for the mobileante nna. (Refer to Fig . 4-121

tAd," " lenqth

(21 Coaxial Cab le Connect io n (Fig. 4 -1 1)W hen the antenna is bumper mounted, th e coax ialcable can be routed through a drain hole into thetrunk.

(3 1 Antenna Adjustment (Fig . 4-12)Some mobile antennas are not designed for SO-ohmimpedance. In this case, impedance match ing be­tween the antenna and the coaxial cable (SO O) is re­quired . This can be ach ieved by us ing an antennamatch ing dev ice or coupler.The antenna should initially be adju sted wi t h a dipmet er , then impedance ma t ching should be checkedwith an SWR met er . (See Fig. 4-12)Pref era bly SWR should be less than 1 .S :1 forsatisfactory op erati on . Ref er to the antenna ins t ruc ­tion manu al for the manufacturers tuning recommen­dations.

NOISE REDUC TIONIn motor vehieles, ign ition no ise is generat ed by theignit ion coi l or distributor. Other sources of noi se in­elude the wiper or heater motors.Although the TS -180S is equi pped wi t h a no iseblanker to minimize ign it ion noise, it is im per ativethat sorn e preventive measures be t aken to red ucethe no ise to the lowest possible level.

(1) A ntenna Location SelectionSin ce ignit ion noise is ge nerat ed by t he ve hic lesengine, the anten na must be in stalled as f ar from theengine as possib le.

Fig . 4 -12 Adjusting Antenna Resonance

Bumper

F~-~/one turn con.-

Gnd Dip meter

(21 Antenna MatchingIn general , mobile ante nnas have a lower im pedancethan SO-ohm coax ial cable, resulting in a rnisrnatchbetween the antenna and the coax . Such trouble canbe elim ina ted by using an ante nna tuner.

-'

: I N P U Tf5F~PUT:, /'

o-? .- ~ OUT PUTINPU T ~.-"

Fig .4-1 3 Antenna Matching Circuit s

22

.

(3) BondingThe compo nent parts 01 motor vehi cles . suc h as th eeng ina , t ransmission, muffler syste m, acc elera tor ,etc .• are coupled to one another at DC and low f re­quencies. but are isolate d at high I req uenc ies. Byco nnecting t hese parts using heavy , braided groundstraps , ig ni t io n no ise ca n be red uce d. Thi s connec­tion is ca lled " bonding ".

(4) Use Ignition Suppressor Cable or Suppresso rSpark Plugs

No ise can be redu ced by usin g spa rk plugs with in ­ternal resistors, or resisti va suppresso r iqnitioncable .

an app ro priate coaxial cable suc h as flG -8 /U .Imped anc e mat chin g is im portant. Impeda ncemism at ch in g will resul t in a high SWR and pow er1055, or can cause un w anted harmon ic radi at ion andin t erference (TVI, BCII. Th e impedance ma tc h can bechecked w it h an SWR met er. Gener ally sat islactoryoperati on is ass ured wh en t he VSWR (Voltage Stan ­ding Wave Ratio ) is less t han 1 .5: 1.For impeda nce mat ching bet w een the ante nnasyste m and transceiver , use 01 th e AT- 180 AntennaTuner (opt io n) is recommend ed . A rotary beamantenna is ve ry effect ive lor DX operat io n in th e 14,2 1 and 28 MHz bands . (Fig . 4 -14)Note: Protect your Equipment - Use a L1G HTN ING

AR RESTaR.(5) Battery Power Connection. r-Battery power shou ld be supplied directl y to thetranscieve r from t he bat t ery terminals .

(6) Battery CapacityTh e pow er system 01 a mot or ve hicle is co mprised 01a battery and an alte rna tor (whic h generates powerwhi le the ang ina is running ) to supply curre nt t oloa ds or t o charge the battery .Since th e t ransceiver dr awn high current duringtran smit , ca re sho uld be excersised not t o overloadt he pow er system.When usin g t he transceiver , t he l oll ow ing pointsshou ld be observed l rom t he viewpoint 01 batteryma intenace:

Turn t he transceiver OFF w hen t he lights, heat er ,w ipe rs and ot her high -draw accessories are U S ~

ed .Avoid t ransceiver op erat ion when the angina isnot running .II necessary, use an amme ter and/or a volt mete rto check battery condi t io n .

4 .23 FIXED STATION OPERATION

POWER

The TS-1 8 0 S requi res more th an 2 0 A at 13 .8 V DCw hen t ransmitting at lul l pow er . Use the Kenwoodmode l PS-30 power supply lor l ixed sta t io n opera­tion.

ANTENNA

For HF fi xed -st ati on operat io n, an ante nna spe ­cilica lly designed lor amateur op eration is recorn­mendad . Antenna t ypes incl ude w ire antennas, ver­t ica ls , rotary bearn, and others. HF antennas arequite large and must be installed to w ithstand strongw ind , heavy rain, etc.An y antenn a used w it h the TS-1 80S should be 0150 ohm impedance and should be connect ed using

Flg . 4 -14 Rotary Beam Antenna

23

~':.'111"""" """" '""' ''''''' ''''''' '''''' ' ''''''' ''''''' ''''''' ' '''' '' ' ", ,,, ,,,, ,",,..,",,..,, ,,,,.. "" -."" "" "" "•..,", "' ..-."". .,"' " -.." ".. "" "".. "" "" . '" '' .,,, ", ,,':

~'"''' ''''''' ' ''''' ' '''"'' ' ''"'' ''"'' ' _''' ''' _ '''''' _ '''''' '''III' ' '''''' ' ,''''" ,'''',_ ,'''', _ ''' " , _ , '' '' , ,''", .,"".,"". ."". '11""'" ''''''''''_' '''''''''''' '10 '" ."".'."".-."".."".."",-."",.."",."'"...""..."".-.""...,,,,.-.,,,,.."".."".."". .,,"

5ECTION 5 ADDITIONAL INFORMATION

5 .1 GENERAL

Your T S-180S has been factory aligned and testedl o specification befo re shipment. Under normal cir­cumstances the transceiver wil l operate in ac cor­dance w it h these operatinq instructions. AII ad ­justable tr im mers and coi ls in your transceive r werepreset al th e fact or y and shou ld on ly be readjust edby a qua lif ied t echn iclan w it h pr op er t est equipmenl.A ttempting service or alignment wi thout fact oryauthorization can void th e transceivers warranty .

5 .2 ACCESSORIES

VFO -180 CONNECTION (Fig. 5 -21Connect the V FO- 1 80 as shown in Fig . 5- 2 . Addi­tian o f this accessor y itern will make your stati onmore enjoyable to operate. AII cables are suppliedw ith the VFO -180. Through the function switch o fthe V FO-l 80, you can op erate as if you are using aseparat e transmitter and receiver. Transmit frequen ­cy can be preset (spotted l by simply pr essing th e T-Fswitch without using t he FUNCTION switc h . Th eVFO is pla ced in transmit mod e during recept ion .

ACCESSORY CONNECTIONSFig . 5 -3 shows th e ACSY connector, Thi s DIN plugcan be used for allaching a linear amplif ier or ot he rex te rnal acce ssori es to th e t ransceive r. Al w ays useshi elded lin e for all fun ction s .

Function Pins

ALC 6 .GND• ( - 10 V DC max. I

Relay Control 2 and 5 or 4• 1OOV 0 .3A • Bridge 2 to GND

if Required .

EXT. P.T .T. 3 ,GND

RECORD O/P , .7

...- accervo

IF UNIT( RE C OUT)

GND

Normalooeo

Re

RECORD (AF Q PI~H--~-:=C- -:=-:=--:=- ::'- 100 -150rnV

Aetay Oontro t AA

Nor mal Oicsc

IF UN :Tr------ ---L1.~ .1.5"O/l 023 0 24

ACSV CQNNECTQR(- \OV De MAXI ALe

REMOVING THE CABINET (See Fig . 5 -1)Figure 5-1 illustrates cabinet removal . Remove theeight top-cover and five bottorn-cover screws andlift away the panels .CAUTION: The speaker lead is attached to thechassis, so be careful when removing the top co ver.The lead can be unplugged. if necessary .

I I 11 I[ [ I O o o OO O eI O ~ O oI o o

~ I I O

r ~ ~

VFQ cable

Fig .5-1

VFO-180

Cabinet Removal

T5 -180S

RAL

II

Seen Irom tre oxa

, , iif;.""" ~""""--_~_~O

3~' ~ '~-i':)))~,~. ~ 20 2,

Fig . 5 -3 Accessory ConnectorTS-180S Interna! Wiring

Fig.5-2

Gro und cable

VFO-180 Connection

EXTENSION FEETThe TS -l 80S is provided with two extension feetwhich can be used to elevate the front pan el. In

24

Oj ¿jj ej"i:fl)":: ~:::o'

Attachin g the Extension Feet

® O·"'·§j'.'000000

Fig . 5 -5

5 . Clear any solder f rom the filter mounting holeswith your soldering pen cil .

6 . lnstall the f ilter on the IF un it ci rcuit board .(There is NO POLA RIT Y. The filter can be install ­ed either way .) Move any wires away from thefilter spa ce . Solder the four pins and two TABSfrom the rear using a low-power soldering pencil(2 5 W) . Soldering should be f ini shed as quicklyas possible .

7 . Reposition the Jumper from the SSB to CW ter­minal.

INSTALLATION OF YK-88SInst all th e f ilter un it as fo llows:1. Remove the transcei ver t op cover using a # 2

Phill ips sc rew-driver. Care should be used not tobreak th e speaker lead . The spe ake r may beunplugged and the cover set aside .

2 . Turn the transceiver upside down and removet he bottom caver .

3 . Free the IF unit circui t board located behind theMode Switch by Six Screws. Sw ing the unit tothe front and upright.

4 . Insert t he fil ter in the space marked 2nd SSBFILTER.Solder t he 4 pins and 2 tabs from the rear using alow wattage soldering pen cil (25 W or less) .Soldering should be finished as quickly as possi ­ble.

• 13 8vRe1ay

( Tr ans m' t)

IL _

Caoacnv

.~>----+--o-" lOO V lA' VT

X VTR Con nector

II - 6VL _

r rans vcrre r ALe Input

,,'---+--++ +-- . 9V :,

'r -e nsve- te r 01.11 1I eO IL PACK

1---:----I

'AL

RF INPUT

'l ransverter In

Fig.5-4

XVTR CONNEC TOR

IF UNITI-~~-----

IL'J_~.s91' D3Z

HF ANT Ou TPUT

some opera ting po siti ons t he tilt ma kes it easier toread t he dial and meter. Fig. 5 -5 shows how to in­stall t he feet .

INSTALlING THE CW FILTER YK-8 8C(Fig .5- 6)Inst all the filter unit as follows :1 . Disconnect power BEFaRE procceding .2 . Remove the top and bottom cover.3 . Remove 6 screws holding t he IF unit (X 48­

1240 -0 0 ) located behind the M od e switch .4 . Swing the IF unit uprig ht as shown in Fig. 5-7 (A).

o

SS8 su TER '!'kas.... 'l<OO "

~© O ~ "'U.'"o= '-'~o00

c:.J © OO © OO () .-----------? tF t lil I o o I liI 2n d fl lter installed~ g : :/'r>d SSll f l lHIl oo:U , I

5 1 '----- ------- --' S2 No 2nd f ilter

oO© O;;;o

O O OO I SSBfllTERVK88S

r:w fOIL TE.R

-saac

,.-- -- - - - -,1 0 0 II evo fllTlll lOl'ToO><I IO ~ ~ _~ J

r-- - ---, I~ O Oti'.'~ O O ':'Oo~ O o~' '"~ l ( OO

Fig. 5-6 Installing the Optional CW and /or SSB Filters

25

o

Counter Frequency Calibration

LJy

Fig .5-8

Too vrew.co ver al! IPL L UNIT

• Remove the dummy printed-circuit board shown inFig . 5-7 (B) by removing two screws and two nutsand remove the two connectors attached to thedummy printed-circuit board .

• Connect the DF-1 80 to the TS-1 80S as shown inFig . 5 -7 IC)

* Fasten the unit w it h six screws.• Ins ta ll t he two connectors disconnected lrom the

dummy board to the DF- 180.• Reinst all the IF unit and the bottom case . Reinstall

the power cable to the transceiver.

5 .3 ADJUSTMENTFREOUENCY CALlBRATION OF REFERENCEOSCILLATORIn the TS-180, all the PLL loops are controlled by onerelerence oscillator (8 MHz) in the PLL ASS 'Y unit(X60-1120-00) .Tnis relerence oscillator has been adjusted exactly inthe lactory. However, il the frequency varies lorsome reason (e.g . changes with the passage 01time). calibrate the frequency in the lollowing man­ner .(Calibration utilizing JJY/WW V )(1) Remove t he cover 01 the PLL ASS'Y unit.(2) Tu ne to JJY/WWV.(3) Connect a covered wire to TP 10 01 the PLL

AS S' Y unit and wind the other end round t heANT cable l or several turns . An aligator clip isconvenient lor connecting the wire to TP1 O. Ad­just the number 01 turns so that the levels 01JJ Y/WW V and a higher harmonic 01 therelerence frequency become about the same.

14) Adjust trimmer capacitor TC 1 so that the doublebeats between the JY/W W V signal and thehigher harmonic 01 t he relerence signal disap­pear. When TC1 is rotated, the beats will vary.Adjust the VFO knob lor optimum listening.Changing the VFO frequency does no t in lluencethe ca libration 01 t he relerence oscilla tor.

5. Change the position 01 the preset switches asshown in Fig . 5-6 .

NOTE: W hen t he preset switches are in lower sideposition, the t ransceiver is in orig inal cond ition.6 . Reconnect t he speaker, then replace the bo ttom

and t op covers.Filter in stallat ion is now comple te.

IN5TALLATION OF THE DF-180• Disconnect the power cable BEFORE proceed ing .* Remove the bo ttom case by unscrewing ni ne

screws, and place the unit bottom up as shown inFig. 5-1 .

* Remove the IF unit by unscrewing six screws.• Tilt the IF unit upright as shown in Fig . 5- 7 (A).

Fig. 5 -7 Installing the DF-180 Memory Unit SIDE TONE FREOUENCY ADJUSTMENTIn the TS -1 80S, Side Tone I requenc y as well as

26

vo lume is adjustable . Adjustment s are locat ed on theIF unit IX48- 1240-00). and can be acce ssedthrough th e bottom cover. ISee Fig . 5-9 )

SSB M IC gain minimum , SSB mode and place theSTBY switch to SENO . Set the METER switch to theALC position and adju st VR4 in the IF unit lor zero .

ALC Meter O-Point Adjustment

With a 10 0 W dummy load in circuit, turn the RFPWR contro l l ul ly e1ockw ise, t he M ODE switch to

II you desire not to have t hem flash on out-ol -bandfreq uencies, rernove the case top, and turn theswitch on t he Counte r A ssem bly un it ol f. (Rel er toFig. 5 -1 0 )

OUT-OF-BAND FREQUENCY DISPLAY IFig . 5 -10)II I requencies out 01 the Amateur bands aresele cted ,the decimals ind icating the M Hz and kHzpositions Ilash .

Band VFO Scale Adjust1.5 MH z 40 0 VR83 .5 MH z 250 VR67.0 MH z 250 VR13

14.0 MHz 25 0 VR921.0 MH z _ 250 VR10

ALC Adjustment

Connect a power met er to the antenna term inal.Turn the RF PW R cont ro l lully clockw ise and placeth e MODE swit ch to CW . Tu ne to 14.200 MHz, andset the ST BY switch to SEND . Adjust the DRIVE co n­trol for maximum power .Adju st VR3 (A LC) on the Filter unit to obt ain 100 W .

ALC Meter Adjustment

After ALC adjustment, set the M ETER switch toALC . Adjust the DRIV E control lor maximum powerlor each bando Adjust each VR on the IF unit lor lullscale A LC for each band, as sown in the Tablebelow.

5 .4 ORDERING SPARE PARTS

When ordering repl acement or spare parts for yourequipment, be su re to specify th e l o llow ing inlorma­tion :Model and seria l nu mber 01 th e equi pment.Schem at ic number 01 th e part . Printed ci rc uit boardnu mber on w hich the part is locate d . Part numberand name, il kno wn, and Qu antity desir ed .Note: A lull Serv ice M anu al is av ailable as aseparate publicat ion .

RF Meter Adjustment

Tune to 14.200 MH z and peak t he Dr ive control formaxim um A LC. Set the M ETER switch to t he RFposi tion and adj us t VR2 (RF) on the Filte r unit so theme te r indicates 15 A on the IC sca le.

5 .5 SERVICE

Should it ev er become necessary to return the equip­ment for repair , pack in ít s original boxes and pack­ing, and inelude a lull descr iption 01 the problem s in­vo lve d . Al so in clude your te lephone number. Youneed not return access ory items unless directl yrelated to the service problem. Tag all returned itemswit h your call l or easy I.D .Please mention the od el and seria l number 01 yourradio in any corresponden ce, whether phone or writ ­ten . For future reference, record this information inthe space probided on th e back cover 01 this manual.Note: W hen claiming warranty service, pleaseinclude a photocopy 01 the bil l 01 sale, or ot herprool 01 purc hase showing the date 01 sale .

Side Tone AdjustmentFig .5-9

LE VElFAEOUENCY

111111

Adjustment of AVR Voltage

(A V R unit X43-1 340-00)

Ad just VR 1 lor 8V between th e TR-2 t erm ina l andchassis.

S Meter adjustment (lF lfnit ]Disconnect the antenna with the trans ceiver inreceive mode. The S meter ze ro-point adjustment isfir st :Adjust VR2 so that meter pointer just indicates zero .II a standard sig nal generator (SSG) is ava ilable, ad ­just V R3 l or S-9 at 14. 1 7 5 MHz, 40 dB signal150¡N) .

ron ".~ C<" '" U~ iilmlllm

!~~ I -

bIDfrll---;;-

LJ ' t::r

Fig .5-10 Out of Band Frequency Display

27

("'''"" ""',""',""',"",. '''''' '''H''..,,, ""H m .., '"""HW 'HW ,'"""""""', ,"",,"", ,"", ,'"', ,",,",,'" ," ", ,"", ,,"" """""" """ """ """ """ "'1" '1"" "'""""" """ "", ,"", ,""' '',,,, ,"", ,"'" ,"

SECTION 6 CIRCUIT DESCRIPTION. .~""",,,,,. ,,",,, ,,,,,,, , .•,,,.,.,,,,.,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,."'..·."".·."",·,"",·."".·."".·.11".·."".·."".·."',.·.,,...·.""..."".-.,",.-""'. -.""..."'".""".,"',, ..,,",.,'''',.,,''',.""•. ..""".."",.",,,,_..,,,,..,,,,. ' '' !l ' ..,,,.." ....." ,•. ,,;

6. 1 Receiver

The receiver is of the sing le conversion type using an8 .8 3 MHz IF circuit.The NB (noise blanker) circuit is of the double con­version t ype . The signar from the ANT or RX ANT isapplied through the PIN diode (BA3 79 x 2) RF ATTcircuit in the RF unit to the antenna coil in the CoilPack un it.The signar is stepped up by the antenna coil, ampliliedby the RF AMP 03 (3 SK73) in the RF unit, and is ledto the balanced mixer circuit 07 and 08 (2SK125 x 2)via the buffer amplifier 0 6 (2 SK125), to obtain an8 .83 MHz IF signal. Th is IF signal is fed to the IF unit(X48-1 240-00) where it is divided into two signals.One signar is amplified by 03 (2 SA 101 5), detected byD1 and D2 (IN60), and is amplified by 04(2S C94 5).Then, it is fed to the RF unit and amplified by 0 4(2SCS45) to control the RF AT T circuit oThe other signar is appl ied to t he ceramic fi lter (CF1)via buffer ampli f ier 0 1 (2 SC460). Th e signar from 01is also fed to t he NB MI X circui t 06 . The signar fromCF1 is ampl if ied by 0 2 (2 SK 19) and is fed to thecrystal fi lte r (X F1 fo r SSB; XF2 [op tion) lor CW)th r ou gh th e N o i s e Bl an k er gate D7- 10(1 S 158 7 x 4 ). The signar f rom the crystal filter isampli fied by 01 5, 16 and 17 (3 SK73 x 3) and is fedto t he buffer amplifie r 02 8 (2 SC4 6 0) via the (op ­tionall SSB filter. Thi s sig nar is then det ect ed by theproduct detector D43 and 44 (IN60 x 4 ) t o producean aud io signal. Audio passes throug h the active LPF029 (2 SC 10 0 0 ), and is fed to the AF VOX un it. Thissignar is applied to the power amplifier Q 1 to dr iv ethe speaker .

6 .2 T ransm itter

The microphone signar is applied to the M IC preamp­lifier 032 (2S C1 0 0 0) , the M IC gain control, and theMIC amplifier 033 (TA 7140P). Microphone inputimpedance may be 500 ohms to 50 k ohms. If themicrophone output level is too high, the 20 dB at ­tenuator can be inserted by moving the jumper onthe IF un it. The MIC amplifier (033) output is fed tothe balan ced modulator D60-64 (IN60 x 4) where itis swit ched by the carrier signar from the bufferampl ilier 034 (2SC460) to produce a DSB signal. ThisDSB signar is applied through buffer ampl ifier 035(2 SK 19) to the crystal filter and is converted to anSSB signal. Amplified by th e 3- stage IF amplifier015-17 (3 SK731 , it is fed to the optional 2nd SSBcrystal filter. 0 1 5-017 also function as t he pro­cessor Compression am plif iers, operating con­tinuous ly during SSB t ransmission . Processor con ­trol is accomplished by switching th e tra nsmit ALCcircuit time constant for the Com pression am plifiers

28

to SLOW or FAST. The signal Irom the Compressioncircui t is led to the optional SSB crystal lilter,amplified by IF amplifier 022 (3SK73), and appliedto the RF unit. The IF amplifier 022 also controls RFPOWE R, external and internal ALC. The signar fed tothe balanced mixer 04 and 05 (3 SK73) in the RFunit is mixed with the VCO (Voltage ControlJedOscilJator) output to produce the final frequency,which passes through a 1-stage tuning circuit and isfed to 01 (3 SK73) where the power is reduced lorgain compensation and protection operation. Thissignar also passes through the B.P.F. (Band PassFilter) and is amplified by wide band amplifiers 02(2 SC1 59 5) and 03 (2 SC741), and output is fed tothe Drive unit through wh ich 10 W output is obtain­ed by 01 (2 SC207 5) and the push-pull amplifiers0 2 and 03 (2 SC2 50S x 2) . This output dri ves t heFINA L un it where it is amplified to 100 W out put by0 1 and 02 (SRF1714 x 2) . The 100 W output is fedto the antenna through the LPF (Low Pass Filt er ) andthe antenna relay . In the LPF unit, the antenna SWRis detected and the rectified error voltage is f ed backto O 1 in t he Co il Pack uni t to red uce the drive forOutput prot ect ion. Th e LPF unit also detects ALC.

6.3 NB CIRCUIT

Th e TS -1 80S NB (noise blankerl circuit va ries the in­put of the no ise amplilier across th e IF bandpass toobtain excelJent noise separation. The IF signar fedto 01 (2SC460) 01 the IF unit (X48-1240-00) isdivided into two signals. One signal is applied to theNB gate circuit D7-1 O (1 S1 587 x 4) via the ceramicfilter and IF AMP 02 (2SK 1S ). The ot her signar is fedto the NB mixer 06 (2SK 19) w here it is mi xed withthe 8 ,375 kHz signar Irom 014 (2 SC4 6 0 ), the NBosci lJator. Thus, th e out put of 06 is converted to8,830-8,375 =455 kHz. Since the NB oscilJat orcan be varied by ± 75 kHz with the NB TUNE con­trol , the ou t put of 06 is adjustable from 530 to380 kHz . This output is amplilied by 07-9(2SC460) and detected by D3 and D4 (1N60). Thedetected out put is DC amplil ied by O 10 (2SCS4 5),011 (2SA 1015) and 012 (2SCS45), and l ed to theNB gate circuit D7-1 O. In this circuit the input signalis switched OFF according to pulse no ise duration.The switching period is generally several micro­seconds and does not affect the signar w hendemodulated. The total circuit has a signal subci rcuitand a noise amplifier circuit; the signar path is ad­justed for noise timing beca use 01 the difference inthe circuits (phase lag). This signal-to-noise timing isob tained by the ceramic filter inserted in the signalcircuit o

6 .7 IF DUAL FILTER

The IF amplilier has a crystal lilter XF 1 at its input . Ifthe option 2nd SSB lilter (YK -88S) XF3 is added tothe output 01 the IF amplilier, the lollowing 3 effectswill occur. (The IF amplilier now has two SSB lilters,hence the name IF Dual Filter.)

~-------~~~~I

AAA I e l ---- BDI ;¡;:o 047

::::. : .cs I Al0 , ~

ONo l ~ , D2 0.047 I,,[""Il., o . o~ I

I II N ~I ~~ ;:¡ '" ~----l Q 2 ::ir I

°T- - ~ '" II ""L_ _ ...J

6.6 SPEECH PROCESSOR

The TS-180S speech processor uses the receiver IFampl iliers as a compression amplil ier duringtransmission (see IF unit X48-1240-00) . The signallrom the SSB l ilter IXF 1) is amplilied by the IF AMP015, 16 and 17 13SK73). The output 01 017passes through buffer amplilier 019 12SC460) andis rectilied by D17 and 18 (1 N60) to detect signalpeaks. This rectilied output is amplilied by 021 andis led back as an AGC voltage to 015 , 16 and 17 tomaintain a constant signal amplit ude. Compressionis always ON. Th e transmit AGC circui t has bothSLOW and FAST time con st ants. In SLOW mode,R115 (4 7 ohm) and C9 4 11 0 I' F) are connected tothe RFB terminal th rou gh the CM 1 terminal to lorm aSLOW time co nsta nt circ uit along with R114(2 .2 M ohm). In FAST mode, the CM 1 terminal isshorted to the CM2 terminal to lorm a FAST timeconstant circuit with R114 (2.2 M ohm), C93(0.022 I'F) , C55, C58 and C61 (0 .0022 I'F). Selec ­tion 01 the AGC circuit t ime constant betweentransmission and reception is made by relay RL1-2.In rec eive mode, the gain 01 016 and 17 would betoo great lor transmission . This gain is reduced bychanging the sou rc e resistance 01 016 and 17 dur­ing transmission . In receive mode, 018 is ON by+ 8 V present on its base , holding the sourceresi stance 01 016 and 17 to 330 ohms IR66 andR70) . In transmit mode, 018 ls OFF because its basevoltage is O V, so the source resistance 01 01 6 and17 is 470 ohms (R74) and circuit gain is reduced.

6.4 RF ATT CIRCUIT

The TS -180S RF ATT circuit, (shown in Fig. 6.1),uses two pin-diodes to attenuate the input signa!.The pin -diodes 18A379) have an excellent lorwardbias current vs. high Irequency resistance character­istic. Therelore, the RF AMP bias voltage will alwayssell-adjust to the point at which optimurn crossmodulation characteristic is obtained. By applying abias volt age to the RGC term ina l, the high Irequencyresistance 01 D1 and D2 is varied and the ci rcu itlunctions as an attenuator. In Fig. 6.1 the inputsignal lrom the antenna is led to the coil pack RFamplilier v ia the RAA terminal , Cl , Dl and C5 . 01and 02 (2SC1815) lorm a differential amplilier. Inreceive mode, + 8 Vis present on the RLR t erm inal,so 01 turns ON. Thus D 1, connected to the collector01 01, is lorward biased. When the A TT switch isturned ON or RF AGC voltage is detected du e to ahigh inp ut signal, DC voltage is applied to the RGCterminal and , hence, 02 is energized and a currentIlows to D2 . Th is reduces the resistance 01 D2which in term s 01 high Irequency, redu ces theresistance between the signal circuit and ground ,and thus the input signal is attenuated . Differentialamplilier 01 current is also reduced which, in turn,reduces D1 current , and thus D 1 resistance is in­creased. In transmit mode, the RLR terminal isgrounded, so 01 is OFF, D 1 ls OFF, 02 is ON and D2is ON. Thus, the input to the RF amplilier is groundedand therelore separated frorn the antenna circuir.eliminating any RF input during transmission.

6.5 PRE MIX UNIT

Various frequencies are mixed in this unit . This unitcontains the FIX CH CAR oscillator FIX/M RIT, 01(2SC460). 02 is a buffer amplilier lor the output ,and 03 is a buffer amplilier to l eed the FIX CHIVFOoutput to th e memory unit. Th e VFO , extern al VFOand memory input s are each l ed t o th e diod e switchD4, D3, D2 and D 1, and to the lo w pass l ilter (DC to8 MHz) where the harmonic component ls removed.The input w ithout harmonic component is led to thebuffer amplilier 04 (2SC460). This output is mi xedwith the FIX/M RIT output (46 .6 MHz) oscillator bythe DBM (double balanced modulator) 07ISN76514N), through buffer amplilier 06 (2SC460).This converted output is 40.0-40.5 MHz , which isled through buffer amplilier 08 and 09 12SC460 x 2)to the COUNTER ASSY unit. This signal is also mixedw ith the CARRIER oscillator output 013, 14 and 1512SC460) bythe DBM 011 (SN76514N). This outputls 48.83 -49.33 MHz, and is led to the PLL unit viabuffer amplilier 012 12SC460).

Fig.6-1

ALADI.D2 :BA379

RF A TT Circuit

AOC

Bocervc Ql ON

Transrmt Q2 OFF

29

! .~

:; 5~ e ~

, ~

~~ w

• ~~

:5:58 _'" REC 46 t-MHI( \'/ -1 46 6OCJ61,t1 z

rS II·r 46 597875MHI1M) (2.125HI)

(S) : 46.5977O!1MHz

( 2295Hz)

4883 4933MHz

--o PR[MIX

OUT PUl

( ' PLL)

'"RElAY

F RITvro RITAO; Vil2SC~5(Q)

QlO

MOOE S~

F RIT VR

VFO RIT W?

F $HIFT '>IR

USB : 88315kH,

( \'I'R

LSB 8828 5kHl

FSK · R

CW' T 88307kH7

FSK· T

CA'FREQ

AOJ VR

Fig .6-2

FREQUENCY CHA RTMOOE r ·RIT (MHz ) CAR( kHI) M1 Xl (M Ht ) MIX2 (MH t )

CAR OUT USB 46.6 88315 '" 48 8315

1 ' I ~ ) esa B82Bs 488285

CW·R 88315-

488315( ,.,.-1 'C óOOB easc , -ococerSI( ·R '" B828S 400 488285

FSII 'l(M 46597875 8830,1 39997875 48828575

FSII · T(S) 46 597705 39 9971<Y.> 48828405

~OTE VFO f'~('ncj 6hMHz

PRE MIX Circuit

(1l Better SIN ratio.(2) Improvement in single signal selecti vi t y .(3) Improvement in compression effect during

transmi ssion.

(1 lBelter SIN ratioExternal noise or noise from the RF AMP and M IXstages w ill be Iimited by the cryst al filter at the IFamplifier input. However, noise generated in the IFamplifier cannot be limited, though there is a filter ef­f ect in the AF amplifier. By installing an addit ionalcry st al filter at th e IF amplifier output SIN ratio willimprove, for the following reasons. As an example, ifthe AF bandwidth is 200 Hz to 3 kHz and the carrierfrequency is 8831.5 kHz (USB). noise, generatedfrom the IF amplifi er, appears at the AF output in twogroups; 8831 .7 -8834.5 kHz and 8831 .3-8828.5kHz . When the IF bandwidth is limited by inserting a

30

Crysta l F i ller Passband Wldlh

/ Cerner Frcqoencv

~± 1 . 2kHz_/ 8831.5kHZ

.,....... Slgnal ¿ Slgnal

I 1 I/ 1 8830 0' Hz /1 ""'--8831

,. 7kHz I8828 .8kHz 8834.5kHz

8831.3kHz

8828.5kHz 8831.2kHz

Fig.6-3 IF DUAL FILTER