[amsat-bb] BRICSAT-1 recovery challenge
bruninga at usna.edu
Fri Nov 6 15:11:21 UTC 2015
If anyone has 9600 baud satellite capability and is looking for a challenge,
you could be successful in recovering BRICSAT (NO83). BRICSAT simply has a
negative power budget. When it wakes up, it should be possible to get in
the command to tell it to turn off unnecessary loads and then let it achieve
full recovery. As is, it wakes up, sends a few feeble 20 second packets and
Bricsat has another excellent PSK31 transpodner on it too. You can detect
BRICSAT when it awakes by the 20 second packet on the downlink OR by the
occasional PSK31 beacon on 435.350 MHz (+/- Doppler). Do not be confused by
PSAT which also has a PSK31 tranpsonder on the same frequency. But they
have different audio tones for the beacon.
> Downlink: 437.975 MHz, 9600 baud
> Uplink: 145.825 MHz, 9600 baud
> Latest “guess” at the TLE (not sure if this is BRICSat)
> 1 90722U 15294.38156592 +.00051032 +00000-0 +11686-2 0 0166
> 2 90722 054.9895 030.6075 0226665 199.3544 159.8861 15.1979213102332
The commands are simple keyboard dumb terminal commands.
If you think you want to take on this challenge, contact us.
Bob Bruninga, WB4aPR
Jin Kang, KB3UKS
US Naval Academy
More information about the AMSAT-BB