EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144...
-
Upload
truongphuc -
Category
Documents
-
view
236 -
download
7
Transcript of EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144...
![Page 1: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/1.jpg)
EME with digital modes 144 MHz • SM4GGC Stig Larsson
• Ham radio licensed since 1973
• Active on VHF/UHF 1973-1983 and from 2012-
• EME 1979-1983 and from 2012-
![Page 2: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/2.jpg)
Agenda
• Modes for digital EME • WSJT 10 “Weak Signal Joe Taylor” (K1JT) • WSJT-X “Weak Signal Joe Taylor” (K1JT) • MSHV (LZ2HV) • MAP65 Broad band receiving software (K1JT) • EME setup • Antennas for EME • EME tools • Result and possibilities
![Page 3: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/3.jpg)
JT65
● Modulation mode created by Joe Taylor – K1JT in 2003
● DSP techniques optimized for extremely weak but slowly varying
signals (moon bounce) and narrow bandwidth
● Uses 65-frequency shift keying with a sync tone and low data rates (2,69
baud)
● Can use ”Deep Search table” = Call3 file (list of stations known to do EME)
for error correction
● Decode signals many decibels below the noise floor about -24 dB without
Deep Search and with Deep Search about -28 dB
![Page 4: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/4.jpg)
JT65 QSO
● Fixed and Expected Message, Grid and Callsign Formats
● CQ SM4GGC JO69
● SM4GGC KD7UO CN87
● KD7UO SM4GGC OOO
● RO “Short hand message” for RO, RRR and 73 (two tones)
● RRR
● 73
![Page 5: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/5.jpg)
JT65B message bandwidth 355 Hz
Sync tone Message information
![Page 6: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/6.jpg)
RO 73 Short hand message
![Page 7: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/7.jpg)
QRA64
● Modulation mode created by IV3NVV Nico Palermo 2016
● Q-ary(63,12) repeat-accumulate code. Operationally similar to JT65 but there are no sync tone and no two-tone short hand message.
● NO ”Deep Search table” = Call3 file (list of stations known to do EME) for error correction. Only using a priori information
● Better than JT65. Decodes full 72-bit message about -28 dB and Locator or report at -30 dB
![Page 8: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/8.jpg)
QRA64 QSO
● Fixed and Expected Message, Grid and Callsign Formats
● CQ SM4GGC JO69
● SM4GGC W2HRO FN20
● W2HRO SM4GGC -23
● SM4GGC W2HRO R-27
● W2HRO SM4GGC RRR
● HNY 73 GL
![Page 9: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/9.jpg)
QRA64 message bandwidth 111 Hz Red curve indicates that the decoder has achieved synchronization and the beginning of a message
Message information
![Page 10: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/10.jpg)
WSJT 10
JT65A EME 6M BW = 178 Hz JT65B EME 2M BW = 355 Hz JT65C EME 70/23cm BW = 711Hz JT65B2 EME 2M contest mode 30 sek JT65C2 EME 70/23 contest mode 30 sek
Call3 file with know EME hams (Deep Search) FSK441 Meteor Scatter on 2M ISCAT-A/B Meteor/Inon Scatter on 6 M JT4A - G EME/tropo microwave JTMS new mode for Meteor Scatter (MSK) Medium Shift Keying
DT= The signal’s time offset in seconds relative to your computer clock. (For a EME- trace around 2,5 sec) Average decode of several trace
Sync tone detected Confidence level 0-10 on Deep Search
![Page 11: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/11.jpg)
Get started with WSJT 10 Interface from Radio to PC • Mic, AF-out and Comport PC to TX Key Sync your computer clock • Automatically sync computer time with Dimension 4 http://www.thinkman.com/dimension4/ Settings on the tranciver • USB mode on • Broadest Filter Width (5KHz) • Noise blanker can be active • AGC off • Modulate TX until you se a some ALC level on transceiver ( Ok for slow modes in EME like JT65 and QRA64)
![Page 12: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/12.jpg)
Movie time JT65B QSO in WSJT 10 http://sm4ggc.se/WSJT10_EB5EEO.mp4
![Page 13: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/13.jpg)
WSJT-X 1.7
New Decoder for JT65 Frankie- Taylor New mode for EME QRA64 Automatic EME Doppler tracking useful on higher fq Enhanced Echo mode
Improvement for EME compared to WSJT 10
![Page 14: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/14.jpg)
WSJT-X Echo mode
![Page 15: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/15.jpg)
Movie time QRA64A QSO in WSJT-X http://sm4ggc.se/QRA64_S52LM.mp4
![Page 16: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/16.jpg)
MSHV By LZ2HV
Uses the free codec's software from K1JT No support for Deep search Only JT65 for EME so far Fast development New version is coming every month
![Page 17: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/17.jpg)
MAP65 Broad band receiver software for EME K1JT
Can be use with a SDR-radio single channel or dual channel with common local oscillator for Adaptive Polarization
Installing MAP65 and the FUNcube Pro+ http://kb5wia.blogspot.se/
Low cost alternative for single channel solution FunCube Dongle Pro+ or other SDR-Dongle
![Page 18: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/18.jpg)
Movie time JT65B QSO in MAP65 http://sm4ggc.se/MAP65_RX8XR.mp4
![Page 19: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/19.jpg)
SM4GGC EME setup
1 st MAP65 V or H pol
WSJT-X or WSJT 10 V or H Pol
2 nd MAP 65 RX V or H Pol
Possible to shift RX-pol independent of TX-pol Switching TX-pol
![Page 20: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/20.jpg)
SM4GGC EME setup
Antennas 4x14 el DK7ZB X-yagi H and V pol Antenna rotator AlfaSpid RAS Antenna tracking PST Rotator TS-2000 for RX WSJT and TX 2 x Fun Cube Dongle pro+ for RX MAP65 1 PC with MAP65 and WSJT and supporting program 1 PC with MAP65 only
![Page 21: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/21.jpg)
2 X FunCube Dongle Pro+ for MAP65 setup
![Page 22: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/22.jpg)
SM4GGC EME setup with supporting program
![Page 23: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/23.jpg)
Antennas for EME 144 MHz
• 1 Yagi possible to QSO 4 Yagi station
• 2 Yagi possible to QSO other 2 Yagi station
• Good solution 4 yagi • Big advantage to use X-yagi
• Optimal is to use Adaptive polarization in RX
![Page 24: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/24.jpg)
JF4TGO with M2 2 X 2MXP20
![Page 25: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/25.jpg)
DL4KUG 4x9 el LFA Yagi
![Page 26: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/26.jpg)
OK1IL 4x9el DK7ZB
![Page 27: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/27.jpg)
KB5WIA 2x7el V-pol
![Page 28: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/28.jpg)
DD0VF 2X9 el Rotatable polarity
![Page 29: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/29.jpg)
OX3LX Greenland
![Page 30: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/30.jpg)
SM4GGC 4x14 el DK7ZB X-yagi H and V pol
![Page 32: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/32.jpg)
EME tools
N0UK chat for EME http://www.chris.org/cgi-bin/jt65emeA N0UK Chat client from PE1L
![Page 33: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/33.jpg)
Result and possibilities
• EME since 2012- over 1 600 QSO
• Different call signs total 678
• Stations QRV on 144 MHz EME could be more than 1000
• So what are you waiting for?
![Page 34: EME with digital modes 144 MHz - sm4ggc.sesm4ggc.se/EME_144_2017.pdf · EME with digital modes 144 MHz • SM4GGC Stig Larsson • Ham radio licensed since 1973 • Active on VHF/UHF](https://reader036.fdocuments.net/reader036/viewer/2022062302/5ae9d4c27f8b9a6d4f9140e4/html5/thumbnails/34.jpg)
SM4GGC Thanks for me