[amsat-bb] Re: FUNcube/AO-73 - Now in Full time low power beacon/ Transponder ON mode
g0mrf at aol.com
g0mrf at aol.com
Sat May 3 13:56:42 PDT 2014
Yes, the satellite has the transponder on for the whole orbit this weekend until around 20:30 UTC Sunday
Looking at the red graph from the telemetry, you can see the power consumed is the same in eclipse and sunlight. The peaks in the red graph are due to the transponder being used.
curious why you couldn't hear yourself. - Although there is a 10kHz offset on the 70cm uplink and for me it does go at the horizon. Can't hear -5 degrees here.
Good luck for another pass
From: Greg D <ko6th.greg at gmail.com>
To: jimlist <jimlist at zoho.com>
CC: 'AMSAT-BB' <amsat-bb at amsat.org>
Sent: Sat, 3 May 2014 20:20
Subject: [amsat-bb] Re: FUNcube/AO-73 - Now in Full time low power beacon/ Transponder ON mode
Just listened to the Saturday 18:34z pass of FunCube over Northern
California. Nice telemetry beacon, but I could not hear anyone
(including myself) in the passband. Is it still in Transponder mode, or
am I doing something wrong?
Telemetry beacon was at about the predicted 145.935 +/-, and I was
listening between 145.950 and 145.970 (and beyond both edges for
Doppler) for other stations (none heard). While listening on 145.960 I
tried transmitting around 435.140, +/- about 20khz; nothing returned.
Antennae are "Oscar class" CP beams, with an RX preamp at the rotor, and
full Az/El computer control. Radio tuning was manual.
Not important for this pass, but I did notice that I could copy the
beacon to -5 degrees (below the Southern horizon), with freshly updated
Jim Heck wrote:
> Hi Folks,
> At approx 21:12 UTC this evening, AO-73 was switched into continuous
> lowpower beacon/ transponder ON Mode for radio amateurs use during the
> We'll be going back to normal mode at the end of the weekend.
> 73s Jim G3WGM
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