Dear David
It's based on the squelch system.
73
Christophe
Le ven. 10 sept. 2021 à 11:46, David G0MRF g0mrf@aol.com a écrit :
Thank you Christophe.
I see from the web site that users do not need a CTCSS tone to access the transponder.
How is it accessed? Does it operate with a squelch system + timer? Presumably a continuous transmission would discharge the battery fairly rapidly.
73
David G0MRF
-----Original Message----- From: christophe.mcr christophe.mcr@gmail.com To: Amsat-BB amsat-bb@amsat.org Sent: Fri, 10 Sep 2021 9:28 Subject: [AMSAT-BB] UVSQ-SAT FM repeater ON September 12 : from 12h UTC to 23H UTC
Dear
The LATMOS team has programmed the UVSQ-SAT satellite to go into transponder mode on Sunday, September 12, 2021 starting at 12:00 UTC. The transponder will be active during 11 consecutive hours.
From September 11th 12:00 UTC, an ASCII message will be broadcast to announce that the transponder mode will be activated. To decode the message, you can use the UVSQ-SAT Decoder software: ApplicationUVSQsatDecoder/src/site/markdown/UserManual.md · 21-ecr-uvsqsat · xtof / JOSAST · GitLab (electrolab.fr) https://code.electrolab.fr/xtof/josast/-/blob/21-ecr-uvsqsat/ApplicationUVSQsatDecoder/src/site/markdown/UserManual.md
Frequencies used :
- Telemetry :
- 437.020 MHz - BPSK - GR3UH 9k6
- FM Transponder :
- Uplink frequency: 145.905 MHz
- Downlink frequency: 437.020 MHz
More information on the satellite: UVSQsat (amsat-f.org) http://amsat-f.org/AMSATLIST/SatellitePage/UK/47438UVSQsat.html and project : UVSQ-SAT (ipsl.fr) http://uvsq-sat.projet.latmos.ipsl.fr/
73's
-- *Christophe Mercier* *Président AMSAT-Francophone* *https://www.amsat-f.org https://www.amsat-f.org/*
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