Bendix/King Silver Crown Plus Avionics Systems Pilot’s Guide Silver Crow… · Avionics Systems...

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Bendix/KingSilver Crown Plus™

Avionics SystemsPilot’s Guide

Audio Panel SystemsCommunication TransceiversNav/Comm SystemsNavigation ReceiverDME SystemsADF SystemTransponders

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Silver Crown Plus R4 11/18/02 1:00 PM Page 42

The information contained in this manual is for reference use only. If anyinformation contained herein conflicts with similar information con-tained in the Airplane Flight Manual Supplement, the information in theAirplane Flight Manual Supplement shall take precedence.

WARNING

Prior to export of this document, review for export license requirement is need-ed.

COPYRIGHT NOTICE

©1998 - 2002 Honeywell International Inc.All rights reserved.

Reproduction of this publication or any portion thereof by any means withoutthe express written permission of Honeywell International Inc. is prohibited.For further information contact the Manager, Technical Publications;Honeywell Business & General Aviation; One Technology Center; 23500 West105th Street; Olathe, Kansas 66061. Telephone: (913) 782-0400.


Bendix/King Silver Crown Plus™

Avionics Systems Pilot’s Guide

TABLE OF CONTENTS

KMA 26 Audio Amplifier/Intercom/Marker Beacon Receiver . . . . . . . . . . . . . . . . . .1

KMA 28 Audio Amplifier/Intercom/Marker Beacon Receiver . . . . . . . . . . . . . . . . . .5

KY 196A, KY 197A and KY 196B VHF Communications Transceivers . . . . . . . . .11

KX 155A and KX 165A VHF Communication/Navigation Transceiver . . . . . . . . . .15

KN 53 Silver Crown TSO’d Navigation Receiver . . . . . . . . . . . . . . . . . . . . . . . . . .23

KN 62A and KN 64 TSO’d Silver Crown Digital DMEs . . . . . . . . . . . . . . . . . . . . .25

KR 87 Silver Crown ADF System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

KT 76C Bendix/King Panel-Mounted Transponder . . . . . . . . . . . . . . . . . . . . . . . .31

KT 70 and KT 71 Panel-Mounted Transponders . . . . . . . . . . . . . . . . . . . . . . . . . .33

KT 73 Mode S, Datalink Transponder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

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Table of Contents

Silver Crown Plus R4 11/18/02 1:00 PM Page TCI

Silver Crown Plus Pilot’s Guide

ATTENTION

The operation of the GPS Navigation, Multi-Function Display and/or TrafficInformation Services components of your particular Silver Crown Plus Systemare covered in separate publications. Choose the publication pertaining to yourinstallation from the list below:

Description Publication Part Number

KMD 150 Multi-Function Display/GPS 006-18220-0000

KLN 94 GPS Navigation System 006-18207-0000

KLN 89B GPS Navigation System 006-08786-0000

KLN 90B GPS Navigation System 006-08772-0000

KMD 550/850 Traffic Addendum 006-18238-0000

Silver Crown Plus R4 11/18/02 1:00 PM Page TCII

1

KMA 26

Transmitter andAutomatic Receiver Selection

The Microphone Selector Switch isa rotary switch used to select thedesired transmitter for the cockpitmicrophones. The “C1”, “C2”, and “C3”positions are for transmitting on theCom 1, Com 2, and Com 3 communi-cations transceivers, respectively. The“EMG” (emergency) position is used tobypass the KMA 26’s audio amplifierand directly connects Com 1 to thepilot’s microphone and headphones.This provides a fail-safe method ofcommunication should the unit fail.The “PA” position may be selectedwhen the aircraft is configured with theKMA 26 driving a dedicated passengeraddress speaker.

The KMA 26 has an “Auto Com”feature which always provides automat-ic headphone audio selection to matchthe Com transmitter in use. Thus, youmay change the Microphone Selector

Switch without having to reselect thecorresponding Com receiver button inorder to hear the receiver. For exam-ple, if “C1” is selected on theMicrophone Selector Switch, you willreceive transmissions on Com 1through headphones and also transmiton Com 1 when you key the mic.Notice that as you rotate theMicrophone Selector Switch from “C1”to “C2” to “C3”, the bottom of therespective Audio Select Button displaysa green illumination to show that thecorresponding receiver has beenselected. To add speaker audio simplypush the Speaker Select Switch (innerright knob) to the “in” position. Pullingthe switch to the “out” position removesspeaker audio.

Additional Receiver SelectionIn addition to the receiver selected

by the “Auto Com” feature describedabove, other receivers may be selectedby pushing the corresponding Audio

KMA 26 Operation

KMA 26Audio Amplifier/Intercom/Marker Beacon Receiver

Photocell for automaticdimming of Marker Beaconlights and Audio Selectbuttons

Marker Beaconsensitivity and

Lamp Test switch

Marker BeaconLights

MarkerMute Button Crew Intercom Volume Knob

(rotate) and Intercom VOXSensitivity Set Switch (push)

Passenger IntercomVolume Knob

Intercom ModeSelect Switch

Audio Select Buttons

MicrophoneSelector Switch

SpeakerSelect Switch

Audio Select ButtonsMonitor Select Button

Green LED’sIlluminate when an

Audio Source isselected

KMA 26 Control Function


Select Buttons. Push button audioselection is available for threeCommunications receivers (“COM1”,“COM2”, and “COM3”), two Navigationreceivers (“NAV1” and “NAV2”), theinternal Marker Beacon receiver(“MKR”), one DME, one ADF, and oneadditional auxiliary receiver (“AUX”).The “AUX” position could be used, forexample, for a second DME or ADF.When a receiver’s audio is selected,the green annunciator illuminates at thebottom of the button. Push the buttonagain to deselect the receiver’s audio.Volume for receivers is adjusted fromthe individual receiver itself, not fromthe KMA 26. Note that some receiverssuch as DME and marker beacon(“MKR”) may not have volume adjust-ments available to the pilot but theseradios usually may be adjusted at anHoneywell Sales and Service Center.

Monitor FunctionWith the Monitor (“MONI” button)

function activated, if Com 1 is selectedon the Microphone Selector Switchthen Com 2 audio is automatically rout-ed to the speaker. Likewise, if Com 2is selected on the Microphone SelectorSwitch then Com 1 audio is routed tothe speaker. This feature may be used,for example, if you are listening to ATCon Com 1 through the headphones andwish to monitor ATIS information fromCom 2 in the background through thespeaker. With the Microphone SelectorSwitch in the Com 1 position for ATCcommunications, pressing the “MONI”button routes Com 2 (tuned to ATIS)audio through the speaker. Pressingthe “MONI” button again will disable thefeature.

When the Monitor function is initiallyselected, the green annunciators in the“MONI” button and in the button for theCom being monitored flash for approxi-mately five seconds. At the end of thistime the “MONI” annunciation remainson steady while the Com annunciationreturns to its previous state (usuallyoff). The Monitor function is only

usable when Com 1 or Com 2 is select-ed on the Microphone Selector Switch.

Marker Beacon ReceiverThe complete TSO’d three-light

marker beacon receiver built into theKMA 26 gives you an accurate visualand aural signal when you pass over a75 MHz beacon. The blue, amber, andwhite lights on the faceplate, as well asthe audio tones, identify the beacontype (outer, middle, or inner/airwaymarker, respectively).

The “MKR” Audio Select buttonmust be pushed so that the greenannunciator is illuminated for the mark-er beacon receiver to provide an audiosignal at beacon passage. The toggleswitch on the upper left side on thefaceplate provides the choice of tworeceiver sensitivities. When the switchis in the “HI SENS” (upper) position thehigh sensitivity is selected which per-mits you to hear the outer marker toneabout a mile from the marker beacontransmitter. At this point you mayselect the “LO SENS” (middle) positionto temporarily silence the tone. It willstart to sound again when you are clos-er to the marker, giving you a more pre-cise indication of its location. Manypilots choose to leave the switch in thelow sensitivity position.

Holding the toggle switch in the“TEST” position simply applies voltageto all three marker lamps in the unitand any external marker lights. The“TEST” position is spring loaded so thatwhen the toggle switch is released itreturns to the “LO SENS” position.

The photocell in the faceplate auto-matically dims the marker lights as wellas the green annunciators in the AudioSelect Buttons for night operation.

When marker audio is heard, thepilot may momentarily push the MarkerMute Button, if desired, to silence themarker audio while the aircraft is pass-ing over this marker beacon. Themarker audio will automatically be resetso that it will be heard when passing

2



over the next marker beacon. TheMarker Mute Button has no effect onthe Marker Beacon Lamps.

IntercomThe KMA 26 contains a very versa-

tile built-in six station intercom.Intercom operation is normally installedto be voice activated (VOX), where theintercom becomes active automaticallywhen a crew member or passengerbegins to speak. It may optionally beinstalled for keyed activation, where aseparate microphone switch must bekeyed to activate the intercom.

In order to set the proper VOX sen-sitivity, momentarily press and releasethe left inner knob when no one isspeaking into their microphones. TheVOX sensitivity should be set if a back-ground hissing sound is heard in theheadphones or if intercom communica-tions are “clipped”, i.e. the first syllableis lost during intercom operation. TheVOX sensitivity may need to be resetwhen there is a large change in thenoise level in the cockpit or cabin. TheVOX level should also be reset eachtime power is applied to the KMA 26.

NOTE: To properly set the VOX sensitivi-ty make sure that no one is speaking intothe microphone. The pilot may wish toput the intercom in the “ALL” position toensure that there is no microphone activi-ty before momentarily pushing the leftinner knob. In addition, make sure thatnone of the microphones are in a positionto pick up extraneous noise such as wind

noise from an open window/vent or vibra-tion from laying on an instrument panel oragainst a window. It is highly recom-mended that any unused headsets beunplugged.

The intercom has three modes:“ALL”, “CREW”, and “PILOT,” which areselected with the toggle switch on thelower left side of the faceplate. In the“ALL” position the pilot, copilot and pas-sengers are all on the same intercom“loop” and everyone hears the radios.In the “CREW” position the pilot andcopilot are on one intercom loop andcan hear the radios while the passen-gers have their own dedicated intercomand do not hear the radios. In the“PILOT” mode the pilot hears the radiosbut is isolated from the intercom whilethe copilot and passengers are on thesame intercom loop and do not hearthe radios.

When either the “ALL” and “CREW”intercom modes are selected, the pilot’sand copilot’s intercom volume is con-trolled by rotating the Crew IntercomVolume Knob (left inner knob) while thepassenger’s volume is controlled byrotating the Passenger IntercomVolume Knob (left outer knob). Whenthe “PILOT” intercom mode is selected,the copilot’s and passenger’s volume iscontrolled with the Passenger IntercomVolume Knob. Remember, the volumeknobs on the KMA 26 control intercomvolume only, not the receivers’ volume.

3

KMA 26


INTERCOM MODE PILOT HEARS COPILOT HEARS PASSENGERS HEAR

PILOT NO MUSIC MUSIC #1 MUSIC #1

CREW MUSIC #2 MUSIC #2 MUSIC #1

ALL MUSIC #1 MUSIC #1 MUSIC #1

Auxiliary Music InputsThe KMA 26 can accommodate two

music inputs for the listening enjoymentof crew and passengers. The musicinput is muted quickly when radio com-munications are received and thengradually returns to its previous vol-ume. The KMA 26 can also be config-

ured at the time of installation to eitherhave or not have the music be mutedby intercom conversation. Table 1 out-lines music input operation during thethree intercom modes for a systemhaving two music inputs. If there isonly one music source it is usuallyinstalled as music 1 but it may be wiredas either music 1 or music 2.

4


Intercom Mode


KMA 28Audio Amplifier/Intercom/Marker Beacon Receiver

5

KMA 28

KMA 28 Operation

Receive Audio Selectors

Receiver audio is selected throughtwo momentary and six latched, push-button, backlit switches. Com 1 andCom 2 are the momentary switches.

Because the rotary microphoneselector switch controls what transceiv-er is being heard, the Com l and Com2 push-buttons are of the momentarytype and do not remain in when select-ed. This is also part of the "auto" func-tion. You will always hear the audiofrom the transceiver that is selected fortransmit by the rotary mic selectorswitch.

The users can identify whichreceivers are selected by noting whichof the green switch LEDs are illuminat-ed. Push buttons labeled Nav 1, Nav 2,DME, MKR (Marker), ADF, AUX (auxil-iary), and SPR (Speaker) are "latched"type switches. When one of these but-tons is pressed, it will stay in the "in"position. Press the switch again and itbe in the "out" position and remove thatreceiver from the audio.

Key "click"

The KMA 28 is equipped with anelectronic "click" to provide additionalfeedback for button operation. To acti-vate the key click, push and holdBOTH COM 1 and COM 2 receiver but-tons for five seconds, and release.Repeat to defeat the click.

Speaker Amplifier

The "SPR" in the push-button sec-tion stands for speaker. This switch willplace all selected audio on the cockpitspeaker when this switch is selected.

Public Address (PA) Function

The KMA 28 has a public addresscapability when an optional external PAswitch is installed. When this switch isput into the PA position, the pilot'smicrophone is placed on a speaker out-put. The copilot can continue to usethe selected Com radio.

When this PA function is installed aseparate cabin speaker (rather than thecockpit speaker) is usually utilized toprevent feedback.

O M I

VOL PUSH

OFF/EMG

HILOT/M

ISOALLCREW

1 KMA 28 TSO

Com 1

Com 2

Nav 1

Nav 2

MKR

ICS

ADF

AUX

DME

SPR

Transmit Swap

COM 1COM 2

COM 3

COM 1/2COM 2/1

TEL

Mic Selector

Swap Indicator

Transmit IndicatorSpeaker Switch

Crew ICS/Music 1 Mute

Mounting Screw

Intercom Mode SelectIntercom Volume

Marker BeaconIndicator Lamps

Marker Beacon Sensitivity &Test/Mute Select

Receive Audio Selectors

Photocell

KMA 28 Control Function


Power Switch /Emergency(EMG) Operation

Unit power is turned on and off bypushing the volume knob. In the off or"Emergency" position, the pilot is con-nected directly to Com 1. This allowscommunication capability regardless ofunit condition. Any time power isremoved or turned off, the audio selec-tor will be placed in the emergencymode.

The power switch also controls theaudio selector panel functions, inter-com, and marker beacon receiver.Unless the mic selector is in Com 3mode, at least one of the selectedaudio LEDs will be on (Com 1 or Com2).

Microphone Selector

When the mic selector switch is inthe Com 1 position, both pilot and copi-lot will be connected to the Com l trans-ceiver. Only the person who pressestheir Push To Talk (PTT), will be heardover the aircraft radio. Turning therotary switch to the Com 2 position willplace pilot and copilot on Com 2.

The KMA 28 gives priority to thepilot's PTT. If the copilot it transmitting,and the pilot presses his PTT, thepilot's microphone will be heard overthe selected com transmitter.

Turning the mic selector fully coun-terclockwise places the pilot and copiloton Com 3. Com 3 receive audio isautomatically placed in the headset(and speaker if selected). Com 1 and/orCom 2 receiver audio can be selectedto monitor those transceivers.

The KMA 28 has an automaticselector mode. Audio from the selectedtransceiver is automatically heard in theheadsets and speaker. You can checkthis function by switching from Com 1to Com 2 and watch the selected audiolight on the selector change from COM1 to COM 2. This ensures the pilot willalways hear the audio from the trans-

ceiver he is transmitting on.

When transmitting, the COM 1 orCOM 2 LED in the KMA 28 audioselector will blink as a further indicationof the selected transmitter.

When switching the mic selectorrotary switch from Com 1 to Com 2,while Com 2 audio had been selected,Com 1 audio will continue to be heard.This eliminates the pilot having toswitch Com 1 audio back on, if desired.

When switching from Com 1 to Com 2while Com 2 has NOT been selected,Com 1 audio will be switched off. Inessence, switching the mic selector willnot effect the selection of Com audio.

Swap Mode (Switch from Com 1 toCom 2 remotely)

With an optional yoke mounted,momentary switch, the pilot can changefrom the current Com transceiver to theother by depressing this switch. When"Swap Mode" is active, an annunciatorin the lower right corner of the unit willilluminate, indicating that the mic selec-tor switch position is no longer current .To cancel "Swap Mode," the pilot mayeither press the yoke mounted switchagain, or turn the mic selector switch tothe Com that is active.

Split Mode

Turning the rotary switch to Com1/Com 2 places the KMA 28 into "SplitMode." This places the pilot on Com 1and the copilot on Com 2. An exampleof this useful feature is when the pilotmay want to talk to Air Traffic Control,while the copilot may be speaking toFlight Watch. Although this mode haslimitations (see below) we believe youwill find this to be a useful feature.

Switching to Com 2/Com l willreverse the "Split Mode" radio selec-tion. The pilot will be on Com 2 and thecopilot will be on Com 1.

Note: Due to the nature of VHF commu-nications signals, and the size constraints

6



in general aviation aircraft, it is proba-ble that there will be some bleed-overin the Split mode, particularly on adja-cent frequencies. In addition, if theCom radios in the installation utilize a"transmit interlock" system, the splitmode may not work properly unless theinterlock feature is disabled.

Note: Honeywell makes no expressed orimplied guarantee regarding the suitabilityof Split Mode in a given installation.

Note: Split Mode does not turn off other(Nav, ADF, etc.) selected audio to pilot.However, the copilot will only hear theselected communications receiver andunswitched audio.

Split Mode ICS

In split mode, the pilot and copilotare isolated from each other on theintercom, simultaneously using theirrespective radios. Depressing the ICSbutton in Split Mode will activate VOXintercom between the pilot and copilotpositions. This permits intercommunica-tion when desired between the crew.Pressing the ICS button again disablesthis crew intercom function.

Telephone Mode

The "TEL" position, fully CW on themic selector switch, is the pilot's "hook"switch. This is active only when thesystem is interfaced to an appropriateapproved system, such as the AirCell™system. Placing the mic selector in TELplaces the pilot microphone and head-phones on the cellphone. The pilot PTTwill switch the pilot mic to the COM 1,and allow continued aircraft communi-cations as well.

NOTE: Placing the mic selector switch inthe TEL position will disable pilot andcopilot intercom, as the intercom circuit istransferred to the telephone use. In crewor ISO mode, placing the switch in TELmode removes the passengers access tothe telephone.

If interface is desired with anothertype of wireless telecommunicationsunit, the aircraft owner can purchase anafter-market interface cable. By FederalCommunications Commission (FCC)regulations, these can only be used onthe ground in the United States.

Interface cables are available forspecific telephones. The following is apartial list of available interface cables:

Compatible PhonesAudiovox Series 5Motorola TeleTAC, DPC 550, DPC65-, Lite Series, Profile SeriesMotorola Elite, M70, M75, SC-725Motorola Bag Phones, MobilesNEC100 Series, 110, 120, 180, SportNEC 700 & 800 SeriesOKI 900/910, AT&T 3730/3710OKI 1150/1145, AT&T 3760Fujitsu PCXMitsubishi 4000, DiamondTel

22X/20X/18XNEC960NEC DT2000 Digital Phone

NOTE: Unauthorized use of cellular tele-phone devices in aircraft is subject toFCC enforcement action, which mayinclude a $10,000 fine per incident.Honeywell , Inc. does not endorse usingunapproved cellular telephone equipmentin flight, and takes no responsibility forthe user's action.

Intercom System

‡ IntelliVox™ VOX-Squelch

No adjustment of the IntelliVox™squelch control is necessary. Throughthree individual signal processors, theambient noise appearing in all sixmicrophones is constantly being sam-pled. Non voice signals are blocked.When someone speaks, only theirmicrophone circuit opens, allowing himor her to communicate on the intercom.

7

KMA 28

‡ InteliVox™ is a registered trademark of PS Engineering, Inc. and is used by permission.


The system is designed to blockcontinuous tones; therefore peoplehumming or whistling in monotone maybe blocked after a few moments.

For best performance, the headsetmicrophone must be placed within ºinch of your lips, preferably againstthem. It is also a good idea to keep themicrophone out of a direct wind path.Moving your head through a vent airstream may cause the IntelliVox™ toopen momentarily. This is normal.

For optimum microphone perfor-mance, Honeywell recommends instal-lation of a Microphone Muff Kit fromOregon Aero (1-800-888-6910). Thiswill not only optimize VOX acoustic per-formance, but will improve the overallclarity of all your communications.

Volume Control

The volume control knob adjuststhe loudness of the intercom for thepilot and copilot only. It has no effect onselected radio levels, music input levelsor passengers' volume level.

Adjust the radios and intercom vol-ume for a comfortable listening level forthe pilot. Most general aviation head-sets today have built-in volume con-trols; therefore, passenger volume canbe adjusted at the headset.

Mono headsets in Stereo Installation

All passenger headsets are con-nected in parallel. Therefore, if amonaural headset is plugged in to aStereo KMA 28 installation, one chan-nel will be shorted. Although no dam-age to the unit will occur, all passen-gers will lose one channel.

Intercom Modes

The lower switch on the left side isa 3-position mode switch that allowsthe pilot to tailor the intercom functionto best meet the current cockpit situa-tion.

ISO: (Up Position): The pilot is iso-lated from the intercom and is connect-ed only to the aircraft radio system. Hewill hear the aircraft radio reception(and sidetone during radio transmis-sions). Copilot will hear passengers'intercom and Entertainment 1, whilepassengers will hear copilot intercomand Entertainment 2. Neither will hearaircraft radio receptions or pilot trans-missions.

ALL: (Middle Position): All partieswill hear the aircraft radio and intercom.Crew will hear Entertainment 1, pas-sengers will hear Entertainment 2.During any radio or intercom communi-cations, the music volume automaticallydecreases. The music volume increas-es gradually back to the original levelafter communications have been com-pleted.

CREW: Down Position): Pilot andcopilot are connected on one intercomchannel and have exclusive access tothe aircraft radios. They may also listento Entertainment 1. Passengers cancontinue to communicate with them-selves without interrupting the Crewand also may listen to Entertainment 2.

Anytime the KMA 28 is in either theCom 1/Com 2, Com 2/Com 1, ("SplitMode"), the pilot and copilot intercom iscontrolled with the ICS button. The pas-sengers will maintain intercommunica-tions, but never hear aircraft radios.

Entertainment Input

The audio selector panel has provi-sions for two separate entertainmentinput devices. They operate indepen-dently in the KMA 28. The volume con-trol does not affect music level.

While in the ISO (Isolate) mode, thecopilot will hear Entertainment 1 whilethe four passengers will hearEntertainment #2. The pilot will hearEntertainment 1 at a level muted about95%. In normal operation, whenever aperson speaks, or if the aircraft radiobecomes active, the music will auto-

8



matically mute and then will graduallyreturn to the original listening levelwhen the intercom or radio conversa-tion ceases.

When in the All mode, pilot andcopilot will hear Entertainment 1 inputwhile all passengers will hear theEntertainment 2 source. While in theCrew mode, pilot and copilot will hearentertainment input #1 while the pas-sengers may listen to entertainmentinput #2.

Soft Mute and Soft Mute inhibit

The Soft Mute feature assures thatthe aircraft radio transmissions will notbe missed due to entertainment play-ing. When there is radio reception orintercom conversation, the music levelis dropped to a background level.When the radio or intercom traffic ceas-es, the level gradually returns to nor-mal.

The front panel ICS switch controlsmuting of entertainment source #1.Pushing this button places the ICS inKaroake (or sing along) mode, whichinhibits the soft mute feature. Thisallows the music to continue uninter-rupted by intercom or radio traffic whencockpit workload is appropriate.Pushing the button again will releasethe mute inhibit function.

The passenger music, source #2,can be placed in the Karaoke mode if aremote switch is installed in the air-craft..

Marker Beacon Operation

The Marker Beacon Receiver usesvisual and audio indicators to alert youwhen the aircraft passes over a 75MHz transmitter.

The audio from the Marker BeaconReceiver can be heard by selecting the

9

KMA 28

Intercom Modes


"MKR" push-button switch.

A three-position switch is used toset the receiver sensitivity and to testthe indicator lamps. Use "High" sensi-tivity initially. This allows you to hearthe outer marker beacon about a mileout. Then select the "Low" sensitivity togive you a more accurate location ofthe Marker. When used only forapproach markers, many pilots chooseto leave the switch in the low sensitivityposition.

The momentary down switch posi-tion is labeled "T/M" (Test/Mute) andilluminates all three lamps simultane-ously to assure they are in workingorder.

The "T/M" position is also a MarkerBeacon "Mute" function. Pushing thisswitch while receiving a marker beaconsignal will cause the audio to be tem-porarily silenced. No action is requiredto restore the audio in time for the nextbeacon.

Telephone Operation (ifequipped with approvedsystem)

Each intercom position has a "hookswitch." The pilot's hook switch is the"TEL" mode on the mic selector, theothers are individual switches mountedadjacent to the headset jacks.

When the intercom is in ALL mode,the pilot can speak on the phone only ifthe mic selector switch is in TEL posi-tion. All intercom positions will hear thetelephone conversation. Anyone whoplaces his or her switch into the "off-hook" position will also be heard on thephone. All will hear selected audio.Com 1 audio is automatically heard inthe headsets. The pilot will have trans-mit capability on Com 1, simply byusing the PTT switch.

In CREW mode, the pilot and copi-lot may use the telephone, with theirrespective hook switch (the pilot selectsTEL on the mic selector). Any passen-

ger who places their switch into the off-hook position will also have access tothe phone, and all four passengers willhear the conversation.

In ISO intercom mode, when theKMA 28 is in the TEL mode, the pilotposition is in the "Phone Booth." Onlythe pilot will hear the telephone, andonly he will be heard. He will also haveaccess to Com 1, and will transmit onthat radio using the PTT. All selectedaudio is provided.

In all cases, only the pilot (and copi-lot in ALL or CREW) will hear the cell-phone ring. At that time they can choseto allow a passenger to take the call, oranswer the phone.

Note: Because the phone uses an inter-com circuit, all stations on that circuit willlose intercom capability when it is in use.

10



11

KY 196A, KY 197A and KY 196B

Power upWhen you turn the ON/OFF/Volume

knob clockwise to the “ON” position,your unit will display the frequencieslast used in the “USE” and “STBY”(standby) windows.

To override the automatic squelch,pull the ON/OFF/Volume knob out and,judging by static noise, rotate it to the

desired volume level. Push the knobback in to activate the automaticsquelch.

NOTE: As with all avionics, the KY 196A,KY 197A and KY 196B should be turnedon only after engine startup. This simpleprecaution will help protect the solid-statecircuitry and extend the operating life ofyour equipment.

KY 196A, KY 197A and KY 196BVHF Communications Transceivers

KY 196A, KY 197A and KY 196B Operation.

Photocell forautomatic dim-ming

“USE” windowshows active fre-quency

“STBY” window showsstored or newly-entered standby fre-quencies

Gas-Discharge displays

“T” indicates mikebutton isdepressed fortransmission

Frequency transfer“flip-flop” button

Channelbutton

ON/OFF/Volume con-trol switch. Pull outfor manual squelchoverride.

Frequency selec-tor knobs

8.33K

Photocell forautomatic dim-ming

“USE” windowshows active fre-quency

“STBY” window showsstored or newly-entered standby fre-quencies

Gas-Discharge displays

“T” indicates mikebutton isdepressed fortransmission

Frequency transfer“flip-flop” button

Channelbutton

ON/OFF/Volume con-trol switch. Pull outfor manual squelchoverride.

Frequency selec-tor knobs

KY 196A/197A

KY 196B


12


TransmittingDuring COMM transmissions, a “T”

will appear between the “USE” and“STBY” windows to indicate the keyingof the microphone.

KY 196A/197A Frequency Mode(Normal Operation)1. Select a new frequency in the“STBY” window, using the frequencyselection knobs. The larger knob con-trols changes in increments of 1MHz.The smaller knob controls changes inincrements of 50kHz when pushed in,and 25kHz when pulled out.

At the outside limits of the band, thedisplay will “wrap around” to the otherend of the band, going from 136MHz to118MHz.

2. Press the transfer button to activatethe new frequency. The newly enteredfrequency in the “STBY” window flip-flops with the frequency in the “USE”window. This new frequency is nowavailable for use. An optional remote-mounted frequency transfer button mayalso be used to perform this “flip-flop”function.

KY 196B Frequency Mode(Normal Operation)1. Select a new frequency in the“STBY” window, using the frequencyselection knobs. The larger knob con-trols changes in increments of 1MHz.The smaller knob allows selection of25kHz frequencies only when pushedin, and both 8.33kHz and 25kHz fre-quencies when pulled out.

At the outside limits of the band, thedisplay will “wrap around” to the otherend of the band, going from 136MHz to118MHz.

2. Press the transfer button to activatethe new frequency. The newly enteredfrequency in the “STBY” window flip-flops with the frequency in the “USE”window. This new frequency is nowavailable for use. An optional remote-mounted frequency transfer button mayalso be used to perform this “flip-flop”function.

Program ModeThe Program Mode is used to pro-

gram frequencies for use in theChannel Mode.

1. Depress the channel (CHAN) buttonfor more than two seconds, until thechannel number (to the right of thestandby frequency) begins flashing.The most recently used active frequen-cy will remain displayed in the “USE”window.

2. Turning either frequency selectionknob will change the channel.

3. Once you’ve selected the desiredchannel number, you may program anew frequency by pressing the transferbutton. This will cause the frequency inthe “STBY” window to flash. The tun-ing knobs are now used to enterdesired frequency.

8.33K

8.33K


4. To program additional channels,push the transfer button again to makethe channel number flash, and repeatstep three above.

5. If you with to program fewer thannine channels while skipping certainchannel numbers, rotate the MHZ fre-quency knob left or right beyond136MHz or 118MHz. Dashes (---) willappear in the “STBY” window, indicat-ing that the channel will be skippedwhen the system is operating in theChannel Mode.

6. To exit the Program Mode, momen-tarily press the channel button. Theunit will also automatically exit theProgram Mode if no programmingoccurs within approximately 20 sec-onds.

The Program-Secure ModeThe Program Secure Mode may be

used to lock a desired frequency to aspecific channel number, prohibitingprogram changes from the front of theunit. Your KY 196A, KY 197A or KY196B should be taken to yourBendix/King dealer for programming inthe Program Secure Mode.

Channel ModeThe Channel Mode is used to recall

preset frequencies stored in memory.

1. To enter the Channel Mode momen-tarily, push the channel button while inthe Frequency Mode. The active fre-quency remains displayed in the “USE”window, and the last used channelnumber and its associated frequency

are displayed in the “CHAN” and“STBY” windows.

If no channels have been programmed,channel 1 automatically disappears anddashes are displayed in the “STBY”window.

2. Turn either frequency selection knobto change the channel number and thechannel’s corresponding frequency inthe “STBY” window.

3. If there is no activity for five seconds,the radio will exit the Channel Modeand return to the Frequency Mode, withthe channel frequency remaining in the“STBY” window.

4. You can also return to the FrequencyMode by either:

a. Pressing the channel button beforethe five-second delay, in which case theradio recalls the “USE” and “STBY” fre-quencies prior to entering the ChannelMode, or

b. Pressing the transfer button, so thatthe channel frequency becomes theactive frequency and the last “USE” fre-quency becomes the new “STBY” fre-quency.

NOTE: If the optional remote channelincrement switch is installed, each activa-tion of the switch will put the unit in theChannel Mode and advance the channelnumber from the previous channel used.

Direct Tune ModeThe Direct Tune Mode is entered by

pressing and holding the transfer buttonfor longer than two seconds. The

13

KY 196A, KY 197A and KY 196B


14


“STBY” frequency will disappear andthe frequency in the active window canbe changed with the frequency selec-tion knobs.

Momentarily pushing the transferbutton will return the unit to theFrequency Mode (normal operation).The “STBY” frequency displayed priorto entering the Direct Tune Mode willreturn unchanged.

Default ModeTurning on your KY 196A, KY 197A

or KY 196B while pressing the transferbutton will bring the unit up in the DirectTune Mode and install 120.00MHz or120.000MHz (KY 196B) as the activefrequency. This will aid the pilot in blindtuning the radio in the unlikely event ofdisplay failure.

Display Adjust ModesTo enter the Display Adjust Mode,

press and hold the channel button untilthe Program Mode is entered.Continue holding the channel buttonwhile simultaneously pressing andholding the frequency transfer buttonuntil “dA 1” replaces the frequency inthe “USE” window.

The frequency selector knobs areused to change the value in the “STBY”window. Momentarily pressing thechannel button steps the unit throughthe Display Adjust Modes, “dA 1”through “dA 3”. Press the frequency

transfer button to exit the DisplayAdjust Mode.

Display Adjust 1 (dA 1) is used tovary the dim/bright response time tochanges in ambient light on the displayphotocell. The range of values for dA 1is 1-8, with 1 representing normal.

The normal setting, 1, providesimmediate display brightness changeswhen there are changes in the lightfalling on the photocell. With dA 1 setto a value of 8, the response time isapproximately eight seconds. dA 1 val-ues of 2 through 7 provide intermediateresponse times.

Display adjustment 2 (dA 2) is usedto vary the display brightness whenambient light conditions are less thandirect sunlight, such as in a dark cock-pit. dA 2 values range from 0-64, with0 being dimmest and 64 being bright-est; the normal dA 2 setting is 20.

dA 3 values range from 0 to 255,with 0 being dimmest and 255 beingbrightest. This adjustment varies theamount of ambient light required for thedisplay to reach its full dim and brightlevels. Normal dA 3 values for a newdisplay range from 0 to 30.

A common use of dA 3 is to adjustthe KY 196A, KY 197A or KY 196B dis-play brightness to match the brightnessof other radios’ displays. Another useis to provide display brightness com-pensation as the display ages.

123.60 118.90


15

KX 155A/165A

KX 155A and KX 165AVHF Communication/Navigation Transceivers

FIGURE 1AKX 155A and KX 165A (25 kHz Versions) CONTROL FUNCTION

Active CommFrequency

Standby CommFrequency

Active NavFrequency

Standby NavFrequency

“T” Indicates Mic Button is Being Depressed“R” Indicates Squelch is Open by Received Signal

Photocell ProvidesAutomatic DisplayDimming

Nav FrequencySelect Knob

Nav ModeButton

Nav FrequencyTransfer Button

Nav AudioVolume Control.

Pull to HearMorse CodeNav Ident.

Comm FrequencySelect Knobs

Comm FrequencyTransfer Button

ChannelButton

On/Off CommVolume Knob.Pull to disable

Comm ReceiverAutomatic Squelch.

Push in forAutomatic Squelch.

Active CommFrequency

Standby CommFrequency

Active NavFrequency

Standby NavFrequency

“T” Indicates Mic Button is Being Depressed“R” Indicates Squelch is Open by Received Signal

Photocell ProvidesAutomatic DisplayDimming

Nav FrequencySelect Knob

Nav ModeButton

Nav FrequencyTransfer Button

Nav AudioVolume Control.

Pull to HearMorse CodeNav Ident.

Comm FrequencySelect Knobs

Comm FrequencyTransfer Button

ChannelButton

On/Off CommVolume Knob.Pull to disable

Comm ReceiverAutomatic Squelch.

Push in forAutomatic Squelch.

8.33K

6

FIGURE 1BKX 165A (8.33 kHz Versions) CONTROL FUNCTION

NOTE: The 25 kHz and 8.33 kHz versions of the KX 165A are distinguishablefrom one another in two ways. The 25 kHz version has “PULL 25K” nomencla-ture below the Comm Frequency Select Knobs while the 8.33 version has“PULL 8.33K”. In addition, the 25 kHz version has two digits to the right of thedecimal in the Comm frequency while the 8.33 kHz version has three digits tothe right of the decimal. The 8.33 kHz channel spacing is required for flight incertain European (ICAO EUR Region) airspace.

KX 155A and KX 165A Operation (25 kHz Versions)

All controls required to operate the KX 155A and KX 165A are located on the unit frontpanel.


16


FIGURE 2Frequency entered in

standby display

FIGURE 3Active/standby frequencies toggle

FIGURE 4Frequency entered in active entry mode

COMM TransceiverRotate the VOL knob clockwise

from the OFF position. Pull the VOLknob out and adjust for desired listen-ing level. Push the VOL knob back into actuate the automatic squelch.

The left portion of the digital displayreadout is allocated for COMM ACTIVEand COMM STANDBY frequencies witha “T” between them to indicate TRANS-MIT and an “R” to indicate RECEIVEmodes of operation.

Select the desired operating fre-quency in the standby display by rotat-ing the Frequency Select Knobs eitherclockwise or counterclockwise. A clock-wise rotation will increment the previ-ous frequency while a counterclockwiserotation will decrement the previous fre-quency.

The outer knob will change theMHz portion of the standby display. Atone band-edge (118 or 136 MHz) thefollowing 1 MHz change will wraparound to the other band-edge.

KX 155A and KX 165A 25 kHz VersionsThe inner knob will change the kHz

portion of the standby display. It willchange in increments of 50 kHz whenthe knob is pushed in and 25 kHz whenthe knob is pulled out. The frequencywrap around at the edge of the band isalso utilized when incrementing ordecrementing the kHz portion of thestandby display.

KX 165A 8.33 kHz VersionThe inner knob will change the kHz

portion of the standby display. It allowsselection of 25 kHz frequencies onlywhen the knob is pushed in and both8.33 kHz and 25 kHz frequencies whenthe knob is pulled out. The frequencywrap around at the edge of the band isalso utilized when incrementing ordecrementing the kHz portion of thestandby display.

To tune the radio to the desiredoperating frequency, the desired fre-quency must be entered into the stand-by display (Figure 2) and then thetransfer button must be pushed. Thiswill trade the contents of the active andstandby displays (Figure 3).

NOTE: An optional remote mountedtransfer switch may also be installed in aconvenient location (such as the controlyoke) to perform the transfer operation.

The operating frequency can alsobe entered by accessing the ACTIVEENTRY (direct tune) mode which isdone by pushing and holding theCOMM TRANSFER button for 2 ormore seconds. In the direct tunemode, only the active part of the dis-play is visible (Figure 4). The desiredfrequency can be directly entered intothe display. Push the COMM TRANS-FER button again to return to theactive/standby display.


The desired channel can be selectedby turning the comm kHz knob (Figure 6).The channel frequency can be entered bypushing the COMM TRANSFER buttonwhich will cause the standby frequency toflash. The comm frequency knobs arethen used to enter the desired frequency(Figure 7). If dashes (displayed whenrotating the outer knob between 136 MHzand 118 MHz) are entered instead of a fre-quency, the corresponding channel isskipped in channel selection mode (Figure8). Additional channels may be pro-grammed by pressing the COMM TRANS-FER button and using the same proce-dure. To exit the program mode and savethe channel information, momentarily pushthe CHAN button. This will cause the unitto return to the previous frequency entry

The transceiver is always tuned to thefrequency appearing in the ACTIVE dis-play. It is therefore possible to have twodifferent frequencies stored in theACTIVE and STANDBY displays and tochange back and forth between them atthe simple push of the transfer button.

During the transmit mode of opera-tion, a “T” will appear between theACTIVE and STANDBY displays. An “R”will appear between the ACTIVE andSTANDBY displays if a detected signal isstrong enough to open the squelch, signi-fying that the transceiver is in the receivemode of operation.

A non-volatile memory stores thecomm ACTIVE and STANDBY frequen-cies on power down. When the unit isturned on again, the COMM ACTIVE andSTANDBY windows will display the sameACTIVE and STANDBY frequencies thatwere displayed before power down.

The KX 155A and KX 165A also haveprovisions to program 32 channels.Pressing the CHAN button for 2 or moreseconds will cause the unit to enter thechannel program mode. Upon enteringthe channel program mode, “PG” is dis-played next to the channel number andthe channel number will flash indicatingthat it can be programmed (Figure 5).

FIGURE 6Selecting desired channel

FIGURE 7Selecting desired frequency

FIGURE 8Corresponding channel is skipped in

channel selection mode

FIGURE 5Entering channel program mode

17

KX 155A/165A


18


mode. The unit will also exit the channelprogram mode if there is no button or knobactivity for 20 seconds.

The channel selection mode can thenbe entered by momentarily pushing theCHAN button (Figure 9). “CH” is displayednext to the last used channel number.

NOTE: If no channels have been pro-grammed, channel 1 appears with dashesdisplayed.

The comm frequency knobs can beused to select the desired channel (Figure10). The unit will automatically exit thechannel mode, with the channel frequencyremaining in the STANDBY window, if nochannel is selected within 5 seconds afterentering the channel selection mode. Thechannel frequency is then made theACTIVE frequency in the normal mannerby pressing the COMM TRANSFER but-ton.

NOTE: An optional remote mounted channelswitch may be installed that increments thenext programmed channel into the standbywindow each time the switch is activated.

The unit is placed in the transmit modeby depressing the MIC KEY button. Theunit has a stuck microphone alert feature.If the microphone is keyed continuously forgreater than 33 seconds, the transmitterstops transmitting and the active Commfrequency flashes to alert the pilot of thestuck microphone condition.

NOTE: Radio control of airport runwaylighting is available at selected airports toprovide airborne control of lights by key-ing the aircraft’s microphone. Approvedlighting systems may be activated by key-ing the microphone as indicated below:7 times in 5 sec. - Highest intensity available

5 times in 5 sec. - Medium or lower intensity

3 times in 5 sec. - Lowest intensity available

Do to the close proximity of airportsusing the same frequency, an airport’sradio controlled lighting receiver may beset at a low sensitivity, requiring the air-craft to be relatively close to activate thesystem. It is also important to be verydeliberate with the keying. The require-

FIGURE 9Entering channel selection mode

FIGURE 10Selecting desired channel


ment for the ground station decoder issuch that it will not respond to very rapidor “staccato” transmissions. If the firstattempt at lighting the runway lights isunsuccessful, repeat with a slower, moredeliberate cadence of microphone key-ing.

NAV ReceiverThe right portion of the display is allo-

cated to NAV receiver information. Thefrequency channeling is similar to theCOMM when operating in the frequencymode (Figure 1A and 1B). The NAV incre-ment/decrement knobs are located on theright hand side of the front panel. Theouter knob operates in 1 MHz steps andincrements/decrements the STANDBY fre-quency display.

The inner knob operates in 50 kHzsteps. The NAV receiver’s lower andupper frequency limits are 108.00 MHzand 117.95 MHz. Exceeding the upperlimit of frequency band will automaticallyreturn to the lower limit and vice versa.

Depressing the NAV frequency trans-fer button for 2 seconds or more willcause the display to go in to the ACTIVEENTRY mode. Only the ACTIVE frequen-cy will be displayed and it can be directlychanged by using the NAV inc/dec knobs.The display will return to theACTIVE/STANDBY mode when the NAVfrequency transfer button is pushed.

Depressing the mode button willcause the NAV display to go from theACTIVE/STANDBY format to theACTIVE/CDI (Course Deviation Indicator)format as shown in Figure 11. The verti-cal “needle” moves side to side similar toa mechanical CDI. When the needle iscentered, the aircraft is on the selectedOBS course. When the active frequencyis tuned to a VOR frequency, the center ofthe CDI scale displays the “TO” or“FROM” indicator.

In the CDI mode, the increment/decre-ment knob (pushed in) channels theACTIVE frequency window and depress-ing the frequency transfer button will

FIGURE 11Nav display active VOR frequency/

CDI format

19

KX 155A/165A


20


cause the ACTIVE frequency to be placedin blind storage and the STANDBY fre-quency (in blind storage) to be displayedin the ACTIVE window display.

When the ACTIVE window is tuned toa VOR frequency, the standby frequencyarea is replaced by a three digit OBS(Omni Bearing Selector) display. Thedesired OBS course can be selected bypulling out the inner NAV frequency knoband turning it. The CDI needle may beautomatically centered with a “TO” indica-tion by depressing the mode button for 2seconds. This OBS display is indepen-dent of any OBS course selected on anexternal CDI or HSI. An “OBS” in themiddle of the NAV display will flash whilethe inner NAV frequency knob is pulledout. The CDI is displayed on the linebelow the frequency/OBS.

When the ACTIVE window is tuned to alocalizer frequency, the standby frequen-cy area is replaced by “LOC” (Figure 12).

When the received signal is too weakto ensure accuracy the display will “flag”.See Figure 13.

Depressing the mode button willcause the NAV display to go from theACTIVE/CDI format to theACTIVE/BEARING format. In the BEAR-ING mode, the increment/decrementknob channels the ACTIVE frequencywindow and depressing the frequencytransfer button will cause the ACTIVE fre-quency to be placed in blind storage andthe STANDBY frequency (in blind stor-age) to be displayed in the ACTIVE win-dow display. In bearing mode of opera-tion, the right hand window of NAV dis-play shows the bearing TO the station.

Figure 14 illustrates the NAV side ofthe display in this mode.

When a too weak or invalid VOR sig-nal is received the display flags as shownin Figure 15.

Another push of the mode button willcause the NAV display to go from theACTIVE/BEARING format to theACTIVE/RADIAL format as shown inFigure 16. In the RADIAL mode, the

FIGURE 12Nav display Active localizer frequency/

CDI format

FIGURE 13VOR flag display

FIGURE 14VOR mode bearing to function

FIGURE 15VOR mode active/bearing,

flag display

FIGURE 16VOR mode

radial from function


increment/decrement knob channels theACTIVE frequency window and depress-ing the frequency transfer button willcause the ACTIVE frequency to beplaced in blind storage and the STAND-BY frequency (in blind storage) to be dis-played in the ACTIVE window display. Inradial mode of operation, the right handwindow of NAV display shows the radialFROM the station. Figure 16 illustratesthe NAV side of the display in this mode:

When a too weak or invalid VOR sig-nal is received the display flags asshown in Figure 17.

Another push of the mode button willcause the unit to go into the TIMERmode. See Figure 18. When the unit isturned on the elapsed timer beginscounting upwards from zero. The timercan be stopped and reset to zero bypushing the NAV frequency transfer but-ton for 2 seconds or more causing theET on the display to flash. In this statethe timer can be set as a countdowntimer or the elapsed timer can be restart-ed. The countdown timer is set by usingthe NAV inc/dec knobs to set the desiredtime and then pushing the NAV frequen-cy transfer button to start the timer. Theouter knob selects minutes, the innerknob in the “in” position selects ten sec-ond intervals, and the inner knob in the“out” position selects individual seconds.After the countdown timer reaches zero,the counter will begin to count upwardsindefinitely while flashing for the first 15seconds. Or the elapsed timer can alsobe reset to zero and started again after ithas been stopped and reset to zero bypushing the NAV frequency transfer but-ton. The Audio Alert, if installed, is thensounded.

The NAV ACTIVE and STANDBY fre-quencies are stored in the memory onpower down and return on power up.

When the smaller increment/decre-ment knob is pushed in, depressing theNAV TRANSFER button will interchangethe ACTIVE and STANDBY frequencies.The NAV IDENT knob is active in the

FIGURE 18Timer mode

21

KX 155A/165A

FIGURE 17VOR mode

active/radial flag display


22


pulled out position so that both voice andident can be heard. When this knob ispushed in, the ident tone is attenuated.The volume of voice/ident can be adjust-ed by turning this knob.

Pilot ConfigurationThis mode can be accessed by

pressing and holding the Nav ModeButton for more than 2 seconds and thenpressing the Nav Frequency TransferButton for an additional 2 seconds, whilecontinuing to hold the Nav Mode Button.When the Pilot Config Mode is enteredthe unit will show the “SWRV” mnemonicwhich is the unit software revision level.Adjustment pages can be accessed byMODE button presses.

The pilot may adjust two parametersin the pilot configuration, the display min-imum brightness and sidetone volumelevel.

Minimum Brightness (BRIM) willhave a range of 0 - 255. The dimmest is0 and the brightest is 255.

Sidetone volume level is adjustedwhen SIDE is displayed. Values from 0 -255 may be selected with 0 being leastvolume, 255 being the greatest.

Subsequent presses of the MODEbutton sequences through SWRV, BRIM,SIDE, and then back to SWRV.

Momentarily pressing the NavTransfer Button exits Pilot configurationmode. The Nav returns to its pre-PilotConfig state with the new brightness andsidetone levels stored in non-volatilememory.

Default ModeTurning on the KX 155A or KX 165A

while pressing either the COMM or NAVfrequency transfer button will bring theunit up in the Direct Tune Mode.120.00MHz (120.000MHz in 8.33 kHzKX 165A) will be the active COMM fre-quency and 110.00 MHz will be theactive NAV frequency. This will aid thepilot in blind tuning the radio in theunlikely event of display failure.


23

KN 53

Power SwitchThis knob controls ON/OFF/VOL/

IDENT. To turn on the unit, rotate theknob clockwise from the detented OFFposition. Rotation of this control alsoadjusts NAV audio volume. NAV voicecan be heard when the knob is pushedin. When the knob is pulled out, theMorse Code IDENT signal plus voicecan be heard.

Frequency SelectionBy rotating the concentric frequen-

cy selector knobs either clockwise orcounterclockwise, the desired operatingfrequency can be dialed into the stand-by display window. A clockwise rotationwill increase the displayed frequencynumber, while a counterclockwise rota-tion will decrease it. The larger selectorknob is used to change the MHz por-

tion of the frequency display; the small-er knob changes the kHz portion in 50kHz steps. At either band edge of the108.00 to 117.95 MHz frequency spec-trum, an off-scale rotation will wrap thedisplay around to the other frequencyband-edge (i.e., 117.95 advances to108.95 with MHz knob rotation, or117.00 with kHz knob rotation). DMEand optional internal glideslope chan-neling are also controlled by theseselector knobs.

NAV Frequency OperationThe desired operating frequency is

first entered into the standby display.To activate, push the transfer button.This will interchange the frequencies inthe ‘use’ and ‘standby’ displays andtune the receiver to the new operatingfrequency.

KN 53Silver Crown TSO’d Navigation Receiver

Operating the KN 53

ActiveFrequency

StandbyFrequency

PowerSwitch

Photocellfor AutomaticDimming Frequency Transfer

Button

FrequencySelectorKnobs


24


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25

KN 62A and KN 64

OperationTurn on the unit only after engine

start-up. Also, turn avionics off prior toengine shut-down. These simple pre-cautions should be practiced with allavionics. It will protect the solid-statecircuitry from short duration high volt-age spikes and extend the operationallife of your avionics.

The 3-position function switchdetermines both the information dis-played and the channeling source.

Place the function switch onFrequency (FREQ). The unit is chan-neled internally with its own two con-centric frequency selection knobs. Thesmaller of the two knobs has an “in”and an “out” position. When in the “in”position, this smaller knob changes the0.1 MHz digit (0.0, 0.1, 0.2, etc.).When pulled “out”, it adds 0.05 MHz tothe frequency and tunes in 0.1 MHzsteps (0.05, 0.15, 0.25, etc.). Pushingthe smaller knob “in” subtracts 0.05MHz from the displayed frequency.The outer, larger knob changes thelarger digits (1 MHz, 10 MHz). InFREQ mode, the unit will display dis-tance and the selected frequency. (SeeFigure 19.)

FIGURE 19.Distance/Frequenc. FREQ Mode.

Now move the function switch tothe Groundspeed/Time-to-Station(GS/T) position. The unit will hold theinternally selected frequency and willdisplay distance, groundspeed andtime-to-station. (See Figure 20.)

FIGURE 20.Distance/Groundspeed/TTS GS/T Mode.

Rotating the frequency selector willhave no effect on the display, becausethe DME is in “Frequency Hold”. Thisfrequency hold feature in the GS/Tmode prevents accidental rechannelingof the DME when the frequency is notdisplayed.

Place the function switch in theRemote* (RMT) position, and yourDME will be channeled when you

KN 62A and KN 64TSO’d Silver Crown Digital DMEs

Operating the KN 62A and KN 64 DMEs

7-Segment GasDischarge Displays

3-Position Function Switch for: • Remote (RMT) Tuning• Frequency (FREQ) Readout• Groundspeed/Time-to-Station (GS/T) Readout

Photocellfor AutomaticDimming

ON/OFFSwitch

FrequencySelectorKnobs


26


select your NAV frequency on the NAVreceiver. Search time is usually aboutone second. When the unit locks on aground station, it will display distance,groundspeed and time-to-station. (SeeFigure 21.)

FIGURE 21.Distance/Groundspeed/TTS RMT Mode.

Prior to lock on, “dashes” will bedisplayed. (See Figure 22.)

FIGURE 22.Prior to Lock On.

Note that you may have two fre-quencies available at all times (oneremotely selected on the NAV receiverand one internally selected with theunit’s controls).

*Remote channeling requires wiringto the NAV receiver.

Operational NotesThe KN 62A and KN 64 have an

audio output for use in identifying theDME ground station being received.The audio level is preset at the factory,but may be easily adjusted through thetop cover.

The unit electronically converts todistance the elapsed time required forsignals to travel to and from the groundstation. This distance is then indicatedin nautical miles on the Distance/Speed/Time-to-Station display. Thisdistance, commonly referred to as slantrange distance, should not be confusedwith actual along-the-ground distance.The difference between actual grounddistance and slant range is least at low

altitude and/or long range. If the rangeis three times the altitude or greater,error is negligible.

The effective range of DMEdepends on many factors, most impor-tant being the altitude of the aircraft.Other contributing factors are the loca-tion and elevation of the station, DMEtransmitter power output, and receiversensitivity.

The groundspeed feature incorpo-rated in the unit measures the rate ofchange in DME slant range distancewith time. This speed is then read from0 to 999 knots in 1 knot increments. Toobtain accurate groundspeed, the air-craft must be tracking directly to or fromthe station. To obtain accurate time tostation, the aircraft must be trackingdirectly to the station.


27

KR 87

KI 227KS 227-00 shown, non-slaved, standard

KI 227-01 slaved, optional

323 2 31

ANT/ADFMode Annunciation

IN USEFrequency

BFOAnnunciation

STANDBYFrequencyAnnunciation

STANDBY Frequency,FLIGHT TIME orELAPSED TIME

Flight timer andElapsed timermode annunciation

ON/OFF/VOLControl Switch

Select ANT mode(out position)Select ADF mode(in position)

FrequencyTransferButton

Select FLIGHTTIMER orELAPSED TIMER

Set and ResetELAPSED TIMER

SelectBFOButton

LubberLine

BearingPointer

HeadingKnob

“SYNC”Knob

CompassCard

FrequencySelectKnobs

KI 228Slaved KI 228-01 shown.Standard KI 228-00 alsoavailable with manuallyrotatable compass card.

KI 229 KNI 582

KR 87Silver Crown ADF System

Operating the KR 87


28


Turn-onRotate the ON/OFF/VOL knob

clockwise from the detented “OFF”position. The unit will be activated andwill be ready to operate. Rotation ofthis control also adjusts audio volume.The KR 87 has “audio muting” whichcauses the audio output to be mutedunless the receiver is locked on a validstation.

Frequency SelectionThe active frequency (to which the

ADF is tuned) is displayed in the leftside of the window at all times. Astandby frequency is displayed in theright side when “FRQ” is annunciated.The standby frequency is placed in“blind” memory when either FLT (FlightTime) or ET (Elapsed Time) mode isselected.

With “FRQ” annunciated, the stand-by frequency is selected using the fre-quency select knobs which may berotated either clockwise or counter-clockwise. Pull the small inner knobout to tune 1’s. Push the smaller innerknob in to tune 10’s. The outer knobtunes the 100’s and the 1000’s up to1799.

The standby frequency selectedmay then be put into the active windowby pressing the “FRQ” button. Thestandby and active frequencies will beexchanged (flip-flopped), the new fre-quency will become active, and the for-mer active frequency will go into stand-by.

Operating Modes

Antenna (ANT) mode is selectedand annunciated when the “ADF” but-ton is in the “out” position. ANT pro-vides improved audio reception fromthe station tuned and is usually usedfor identification. The bearing pointer inthe KI 227 indicator will be deactivated

and immediately turn to the 90° relativeposition and remain there during ANTreception.

The ADF mode is selected andannunciated when the “ADF” button isin the depressed position. ADF acti-vates the bearing pointer in the KI 227indicator, causing it to move withouthesitation to point in the direction of thestation relative to the aircraft heading.The compass card on the KI 227 maybe rotated as desired by using theheading knob.

NOTE: The KI 227-01 or KI 228-01 indi-cators, when installed with a Bendix/KingKCS 55A Compass System, have aslaved compass card. Magnetic headingof the aircraft will be under the lubberline. The indication of this compasscard should be compared with that ofthe KI 525A master indicator from timeto time. Check especially after steepbank turns and taxi turns. If a discrep-ancy between the two readings exists,the KI 227-01 or KI 228-01 compasscard should be synchronized to the KI 525A compass card by rotating the“SYNC” knob on the indicator.

Outside of the United States somestations are unmodulated and use aninterrupted carrier for identification pur-poses. The BFO mode, activated andannunciated when the “BFO” button isdepressed, permits the carrier waveand the associated Morse code identifi-er broadcast on the carrier wave to beheard.

ADF Test(PRE-FLIGHT OR IN-FLIGHT)

Select ANT mode. This will causethe bearing pointer to move directly to

231 39 38

323 2 31

323 2 31


the parked 90° position. Make sure theunit is tuned to a usable frequency.Now select ADF mode and the needleshould move without hesitation to thestation bearing. Excessive sluggish-ness, wavering or reversals indicate asignal that is too weak or a system mal-function.

Operating the TimersThe flight timer will always be auto-

matically reset to :00 whenever poweris interrupted either by the avionicsmaster switch or the unit’s ON/OFFswitch. An optional external switchmay be installed which, when activated,will stop or start the flight timer. Thisswitch would be of use during a non-refueling stop when resetting the flighttimer is not desired. On some aircraft itmay be desirable to use the aircraftstrut switch instead of a manual switchto stop and start the flight timer. Itshould be emphasized that thestart/stop function will only operate withpower applied to the unit. Always readflight time prior to power shutdown.

Flight time or elapsed time are dis-played and annunciated alternatively bydepressing the FLT/ET button. Theflight timer continues to count up untilthe unit is turned off or stopped with anexternal switch. The elapsed timer maybe reset back to :00 by pressing theSET/RST button. It will then startcounting up again. (NOTE: pressingthe SET/RST button will reset theelapsed timer whether it is being dis-played or not.)

The elapsed timer also has a“count-down” mode. To enter thecountdown mode, the SET/RST buttonis depressed for about two seconds, or

until the “ET” annunciation begins toflash. It is now in the ET set mode, anda time up to 59 minutes, 59 secondsmay be preset into the elapsed timerwith the concentric knobs. The presettime will be displayed and remainunchanged until SET/RST is pressedagain, which will start the elapsed timercounting down from the preset time.When the timer reaches :00 it will startto count up as the display flashes for15 seconds and an aural alarm, ifinstalled, is activated for about 1 sec-ond.

NOTE: The standby frequency which isin memory while flight time or elapsedtime modes are being displayed may becalled back by pressing the FRQ button,then transferred to active use by pressingthe FRQ button again.

While FLT or ET is displayed the “inuse” frequency on the left side of thewindow may be changed, by using thefrequency select knobs, without anyeffect on the stored standby frequencyor the other modes. This feature isespecially useful when searching forstations with unknown frequencies.

Erroneous ADF Bearings Dueto Radio FrequencyPhenomenaStation Overlap

In the U.S., the FCC, which assignsAM radio frequencies, occasionally willassign the same frequency to more thanone station in an area. Certain condi-tions, such as Night Effect, may causesignals from such stations to overlap.This should be taken into considerationwhen using AM broadcast stations fornavigation.

Sunspots and atmospheric phenom-ena may occasionally distort receptionso that signals from two stations on thesame frequency will overlap. For thisreason it is always wise to make positiveidentification of the station being tuned,by switching the function selector to ANTand listening for station call letters.

231 39 38

231 28

29

KR 87


30


Electrical Storms

In the vicinity of electrical storms,an ADF Indicator pointer tends to swingfrom the station tuned toward the elec-trical discharges. Location of the stormcan be useful information, but the errat-ic behavior of the pointer should betaken into account.

Night Effect

This is a disturbance particularlystrong just after sunset and just afterdawn. An ADF indicator pointer mayswing erratically at these times. If pos-sible, tune to the most powerful stationat the lowest frequency. If this is notpossible, take the average of pointeroscillations to determine relative stationbearing.

Mountain Effect

Radio waves reflecting from thesurface of mountains may cause thepointer to fluctuate or show an erro-neous bearing. This should be takeninto account when taking bearings overmountainous terrain.

Coastal Refraction

Radio waves may be refractedwhen passing from land to sea or whenmoving parallel to the coastline. Thisshould be taken into account whenoperating near coastal areas.


31

KT 76C

About TranspondersYour Honeywell Bendix/King

transponder is a radio transmitter andreceiver which operates on radar fre-quencies. Receiving ground radarinterrogations at 1030 MHz, it returns acoded response of pulses to ground-based radar on a frequency of 1090MHz.

As with other Mode A/Mode Ctransponders, the KT 76C replies withany one of 4,096 codes, which differ inthe position and number of pulsestransmitted. By “replying” to groundtransmissions, your KT 76C enablesATC computers to display aircraft iden-tification, altitude and ground speed onEnroute, Approach or DepartureControl radar screens. When theIDENT button is pressed, your aircraftwill be positively identified to the AirTraffic Controller.

Operating the KT 76CBefore starting your aircraft’s

engine, make sure that the KT 76Cfunction selector knob, or your avionicsmaster, is turned to OFF. After enginestart, turn the function selector knob toSBY (standby). Give your transponderabout 45 seconds to become opera-

tional. Select the proper reply code bypressing the desired code entry but-tons. The reply code will be displayedin the code window. Before takeoff,rotate the function selector knob to theALT (altitude) position for Mode C alti-tude reporting to ATC. If you do nothave an encoding altimeter, rotate thefunction switch to ON for Mode Areporting.

Altitude DisplayThe KT 76C displays Flight Level

Altitude, marked by the letters “FL” anda number in hundreds of feet, on theleft side of the display. For example,the reading “FL 065” corresponds to thealtitude of 6,500 feet, referenced to29.92 inches of mercury (or 1013 hP)at sea level. Flight Level Altitude repre-sents “pressure altitude,” and shouldnot be confused with true altitude.Please note that the displayed altitudemay not agree exactly with the aircraft’saltimeter when flying below 18,000 feet,because encoders are preset to 29.92inches of mercury. An encoder’s alti-tude transmission is automatically cor-rected for proper altimeter setting by aground based computer, to present thecorrect altitude to the controller.

KT 76CBendix/King Panel-Mounted Transponder

KT 76C OPERATION

IDTButton

AltitudeWindow

ReplyIndicator

CodeWindow

CLRButton

Code EntryButtons

VFRButton

FunctionSelectorKnob


32


Ranging from -1,000 to +99,000feet, Flight Level Altitude is displayedonly when altitude reporting is enabled.If the altitude window is blank or showsa series of dashes (as in the case of aninvalid altimeter code being reported),altitude reporting will be disabled.

CLR ButtonCode entry mistakes are corrected,

one digit at a time, by pressing the CLRbutton and reentering the correct code.The last active code will be displayed ifa complete four-digit code has not beenentered and there is no activity on anyof the code entry buttons, the VFR but-ton, or the CLR button for four seconds.

VFR ButtonMomentarily pressing the VFR but-

ton will enter a pre-programmed VFRcode, typically 1200, in the code win-dow. Pressing and holding the VFRbutton for two seconds will cause thelast active code to be displayed.

During installation, it may bedesired to set the default VFR code toa code other than 1200. The VFR codeis programmed by the followingsequence:

1. Place the unit in standby.

2. Enter the desired VFR code with theident code pushbutton switches.

3. Depress the “VFR” pushbutton whileholding the “IDT” pushbutton in itsdepressed position.

Reply IndicatorThe reply indicator blinks to indicate that

the KT 76C is functioning properly and replyingto interrogations.

Squawk IdentWhen you are asked to “ident” by ATC,

press the IDT button. The reply indicator willilluminate continuously for 18 seconds duringthe ident interval.

Important Codes7700 - Emergency

7600 - Communication Failure

7500 - Hijacking

0000 - Military - DO NOT USE!

See the Aeronautical Information Manual(AIM) for detailed explanation of these codesand their use.


33

KT 70 and KT 71

IDENT ButtonMarked IDT, the KT 70/71’s Ident

button is pressed when ATC requestsan “Ident” or “Squawk Ident” from youraircraft. When the Ident button ispressed, the reply indicator, an “R”-shaped annunciator light will glow forapproximately 18 seconds. An optionalRemote Ident switch may also beinstalled to perform the same function.

ID CodeThe ATCRBS Transponder

Identification code (squawk code) forthe aircraft is displayed in the IdentWindow on the right side of the display.Each of the four Transponder CodeSelector Knobs selects a separate digitof the identification code.

ReplyThe lighted “R” reply indicator blinks

when the transponder is replying to avalid interrogation and illuminates for18 seconds after the initiation of theIdent.

Altitude DisplayThe KT 70 and KT 71 display Flight

Level Altitude, marked by the letters“FL” and a number in hundreds of feet,

on the left side of the display. Forexample, the reading “FL 071” corre-sponds to an altitude of 7,100 feet, ref-erenced to 29.92 inches of mercury (or1013 hP) at sea level. Flight LevelAltitude represents “pressure altitude”,and should not be confused with truealtitude. Please note that the displayedaltitude may not agree exactly with theaircraft’s altimeter when flying below18,000 feet, because encoders are pre-set to 29.92 inches of mercury. Anencoder’s altitude transmission is auto-matically corrected for proper altimetersetting by a ground-based computer, topresent the correct altitude to the con-troller.

Ranging from -1,000 to +99,900feet, Flight Level Altitude is displayedonly when altitude reporting is enabled.If the altitude window is blank or showsa series of dashes (as in the case of aninvalid altimeter code being reported),altitude reporting will be disabled.

VFRMomentarily pressing the VFR

Pushbutton/Function Selector Knobrecalls the preprogrammed VFR code,superseding whatever code was previ-ously entered. If the VFR Pushbutton

KT 70 and KT 71Panel-Mounted Transponders

Operating the KT 70 and KT 71

1200 071

IdentPushbutton

Encoding AltimeterAltitude Window

ModeAnnunciation

ReplyIndicator

IdentWindow

Photocell

4 ATCRBS CodeSelector Knobs

VFRButton



34


is pressed inadvertently, the previouscode may be retrieved by pressing theFunction Selector Knob and holding itfor two seconds.

If a preset VFR code other than thefactory-set 1200 is desired, a new codemay be programmed as follows:

1. Place the unit in Standby (SBY)2. Select the desired VFR code3. While holding the IDT (Ident) but-

ton in, momentarily press the VFRbutton (Function Selector Knob).

Function Selector KnobThe Function Selector Knob on the

right side of the KT 70 and KT 71enables you to choose from among thefollowing operating modes:

OFF - The unit is not receiving power.For the KT 70 only, when the unit isturned to another mode, the installer-programmed aircraft address and theaircraft’s maximum airspeed will be dis-played, according to the followingsequence:

1.) The “FL” window will display “AA1”,while, for two seconds, the Ident win-dow will display the first four digits ofthe unique aircraft address code.

2.) The “FL” window will display “AA2”and the Ident window will display thelast four digits of the aircraft addresscode.

3.) The “FL” window will display thelower limit and the Ident window the

upper limit of the preprogrammed air-speed range, again for two seconds.The six programmable ranges include0-75, 75-150, 150-300, 300-600, 600-1200 and greater than 1200 knots.

SBY (STANDBY) - In Standby on boththe KT 70 and KT 71, the unit is ener-gized but is inhibited from replying toany interrogation. “SBY” is shown onthe display, while the altitude display isdisabled.

TST (TEST) - Replies are disabled intest mode, and the unit illuminates allsegments of the display for at least fourseconds. A series of internal tests isperformed to check the KT 70/71’sintegrity, verifying all EEPROM dataand making hardware and squitterchecks.

Should a squitter error occur, thetransmitter is considered inoperative,and the message “F01” will appear onthe altitude display. Should an EEP-ROM error be detected, the messages“F02” (internal) or “F03” (external) willappear. If the KT 70 or KT 71 detect ahardware failure that prohibits normaloperation, the message “F04” will beshown. If no errors are detected, theunit remains in test mode.

GND (GROUND) - In the KT 71, allinterrogations are inhibited. In the KT70, ATCRBS (Air Traffic Control RadarBeacon System) Mode A&C interroga-tions are inhibited, but the KT 70 willreply to all valid Mode S interrogations,

0123 AA1

4567 AA2

300 150

1200

8888-888

1200 040


provided a Mode S status bit is set toindicate the aircraft is on the ground.In both units, the ID code is shown onthe right side of the display, with alti-tude reported on the left side. The let-ters “GND” are also displayed in thismode.

NOTE: An optional remote “air/ground”switch may be installed on the aircraft’slanding gear strut to keep the KT 70 andKT 71 in the GND mode until the airplaneis airborne. This feature eliminates theneed to activate the unit’s ON or ALTmodes after takeoff.

ON - The KT 70 is able to reply to allvalid Mode A, C and S interrogations(Mode A and C on the KT 71).However, the altitude information willnot be transmitted. In the ON mode,the altitude window is left blank, the IDcode is shown on the right and the“ON” annunciation is shown on the dis-play.

ALT - In the “ALTITUDE” mode, theKT 70 replies to all valid Mode A, C andS interrogations (Mode A and C on theKT 71). The ID code is displayed in theright window and altitude information (inhundreds of feet) is shown on the left.

DISPLAY ADJUST MODE - The KT 70’s and 71’s displays feature threeprogrammable adjustments: dA 1, dA 2and dA 3. Display Adjust 1 (dA 1) isused to vary the dim/bright responsetime to changes in ambient light. A set-

ting of 1 provides immediate displaybrightness changes when there arechanges in the light falling on the pho-tocell. With dA 1 set to a value of 8,the response time is approximatelyeight seconds. dA 1 values of 2through 7 provide intermediateresponse times. The factory setting is1.

Display Adjust 2 (dA 2) is used tovary the display brightness when ambi-ent light conditions are less than directsunlight, such as in a dark cockpit atnight. The factory setting is 20.

Display Adjust 3 (dA 3) varies theamount of ambient light required for thedisplay to reach its full dim and brightlevels. A common use of dA 3 is toadjust the KT 70 and KT 71 displaybrightness to match the brightness ofother radios’ displays and to providedisplay brightness compensation as thedisplay ages. The factory setting is 0.

The following steps allow you toaccess these adjustments:

1. Turn the Function Selector Knob toTST.

2. Press and hold the IDT button forfive seconds, until “dA 1” appearsin the altitude window.

3. Select the desired display adjust-ment (dA 1, dA 2, dA 3) by press-ing the VFR pushbutton.

4. Set the desired adjustment valuein the IDENT window, using theIdent Code Selector Knob on thefar right. Note the settings below:dA 1 (Photocell response):

1-8, 1=Fastest, 8=SlowestdA 2 (Display brightness):

0-64, 0=Dimmest, 64=Brightest

dA 3 (Vendor/Age compensation):0-255, 0=Normal/Dimmest, 255=Brightest

5. Press the IDT pushbutton or turnthe Function Selector Knob to exitthe display adjust mode, savingthe new values.

1200

2284 040

1117 dA1

35

KT 70 and KT 71


36




37

KT 73

IDENT ButtonMarked IDT, the KT 73's Ident but-

ton is pressed when ATC requests an"Ident" or "Squawk Ident" from your air-craft. When the Ident button is pressedwhile in the GND, ON or ALT modes,“IDT” will be illuminated on the displayfor approximately 18 seconds. Anoptional Remote Ident switch may alsobe installed to perform the same func-tion.

ID CODEThe ATCRBS Transponder

Identification code (squawk code) forthe aircraft is displayed in the IdentWindow on the right side of the display.Each of the four Transponder CodeSelector Knobs selects a separate digitof the identification code.

REPLY INDICATORWhen the KT 73 is replying to a

valid ground Mode S interrogation, thereply nomenclature “R” will be illuminat-ed twice per second. When the KT 73is replying to a valid ATCRBS or air-borne Mode S interrogation, the replynomenclature “R” will be illuminatedonce per second.

ALTITUDE DISPLAYWhen the ALT mode is selected,

the KT 73 displays the current FlightLevel, marked by the letters “FL” and anumber in hundreds of feet. This isshown on the left side of the display.For example, if “FL 071” is displayed,this corresponds to a reported pressurealtitude of 7,100 feet. Note that the dis-played Flight Level, or pressure alti-tude, may not agree with the aircraft’sbaro-corrected altitude under non-stan-dard conditions. The Flight Level, orpressure altitude, reported by the KT 73will be corrected as required by theATC facility.

A fault in the altitude interface or aninvalid altitude input to the KT 73 willcause the display to show a series ofdashes when the KT 73 is in the ALTmode.

VFRMomentarily pressing the VFR

Pushbutton recalls the preprogrammedVFR code, superseding whatever codewas previously entered. If the VFRPushbutton is pressed inadvertently,the previous code may be retrieved by

KT 73Mode S, Datalink Transponder

Operating the KT 73

FAIL

IdentPushbutton

FailIndication

Encoding AltimeterAltitude Window

ReplyIndicator

IdentWindow

Photocell

4 ATCRBS CodeSelector Knobs

VFRButton



pressing the VFR button and holding itfor two seconds.

If a preset VFR code other than thefactory-set 1200 is desired, a new codemay be programmed as follows:

1. Place the unit in Standby (SBY)

2. Select the desired VFR code

3. While holding the IDT (Ident) buttonin, momentarily press the VFR button.

FUNCTION SELECTOR KNOBThe Function Selector Knob on the

right side of the KT 73 enables you tochoose from the following operatingmodes:

OFF - The unit is not receiving power.When the unit is turned to anothermode, it will reply or squitter within twoseconds, according to the selectedmode.

FLT ID (FLIGHT ID) - The Flight IDshould be the aircraft identificationemployed in the flight plan. When noflight plan is available, the registrationmarking of the aircraft should be used.When the FLT ID mode is selected, theKT 73 is inhibited from replying to anyinterrogation, "FLT ID" is annunciatedon the display and the flight ID is dis-played. The Flight ID is modified byrotating the CRSR knob to position thecursor (▲) under the character to bechanged then rotating the FLT ID knobto select the desired character. Oncethe CRSR and FLT ID knobs have beenidle for 5 seconds or the mode selectknob has been turned to the SBY posi-tion the flight ID will be saved.

SBY (STANDBY) - In Standby, the unitis energized but is inhibited from reply-ing to any interrogation. "SBY" isshown on the left side of the displayand the ID code is shown on the right.

TST (TEST) - Replies are disabled andall display segments are illuminated forat least four seconds. A series of inter-nal tests is performed to check the KT73's integrity, verifying all aircraft specif-ic configuration data and make hard-ware and squitter checks. If no faultsare detected, “TEST OK” is displayedand an audio message “TEST OK” isannunciated, if the audio function isinstalled.

The audio volume is set during installa-tion. Contact your avionics installer toadjust the volume level to your person-al preference.

Should a fault be detected, “SBY”will be displayed on the left and the dis-play on the right will cycle through allthe detected faults. If the faults areassociated with external data, an audiomessage “CHECK FAULT CODES” willbe annunciated. Faults internal to theKT 73 will annunciate an audio mes-sage “TRANSPONDER TEST FAIL”.Internal faults will also cause “FAIL” tobe annunciated in the lower left of thedisplay in any mode of operation.

The fault codes are as follows:F1YY* - Squitter (Internal)F2YY* - Internal or External EEPROM

(Internal)F3YY* - Hardware (Internal)F401 - Mode S address/Max Airspeed

(Internal)F5YY* - Gilham or Executive (External)F6YY* - Interface (External)

* YY denotes the specific fault.

38



Except for the acquisition data fault(code 101), the KT 73 will not inhibitreplies when an internal fault is identi-fied.

GND (GROUND) - The KT 73 will inhib-it ATCRBS (Air Traffic Control RadarBeacon System), ATCRBS/Mode S AllCall and Mode S-only All Call replies.However, the unit will continue to gen-erate Mode S squitter transmissionsand reply to discretely addressed ModeS interrogations. The ID code is shownon the right side of the display and theletters "GND" are shown on the leftside.

Note: An optional remote "air/ground"switch may be installed. This featureeliminates the need to manually placethe KT 73 in the GND mode. In addi-tion, when the aircraft is airborne, theKT 73 will function as though theFunction Selector Knob is in the ALTposition when it is actually in the GNDposition.

ON - The KT 73 is able to reply to allvalid Mode A, C and S interrogations.However, the altitude information willnot be transmitted. In the ON mode,the altitude window is left blank and theID code is shown on the right side ofthe display.

ALT (ALTITUDE) - The KT 73 replies toall valid Mode A, C and S interroga-tions. The ID code is displayed in the

right window and altitude information (inhundreds of feet) is shown on the left.The letters "FL" will be illuminated, indi-cating Flight Level. If altitude informa-tion is unavailable or invalid, the leftportion of the display will be dashed.

DISPLAY BRIGHTNESS ADJUST-MENT - The KT 73's display brightnessis controlled by an ambient light sensor.In addition, it has a manual adjustmentto allow for matching to the brightnes ofother lighted displays that may be inthe cockpit. The display is adjusted inthe test (TST) mode.

To manually adjust the displaybrightness, perform the following opera-tions:

1. Turn the Function Selector Knob to"TST".

2. Turn the BRT knob clockwise toincrease the display brightness, orcounterclockwise to decrease the dis-play brightness.

The eight carets below the alphanu-meric display characters indicate thebrightness setting (relative to the photo-cell reading). Maximum brightness isindicated by all eight carets being illu-minated. Minimum brightness is indi-cated by no carets being illuminated.The factory default setting is represent-ed by four carets being illuminated.Pressing the IDT button will return thebrightness to the default factory value.

3. Turn the Function Selector Knobfrom TST to store the display bright-ness settings.

NOTE: If power is removed from the KT73 while still in the test mode, the bright-ness setting will be lost and the unit willrevert to the last known setting.

39

KT 73

FAIL


40




Honeywell International Inc.One Technology Center 23500 West 105th StreetOlathe, KS 66061Telephone (913) 782-0400 FAX 913-712-1302

©1998-2002 Honeywell International Inc.006-18110-0000 Printed in U.S.A.Revision 4 Nov/2002 N


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