According to this news report, the CalPoly cubesat DAVE (Damping and Vibrations Experiment) is scheduled to launch on Saturday on a Delta II rocket from Vandenberg Air Force Base.
Here’s a picture:
This spreadsheet by JE9PEL shows telemetry beacon as “437.150 MHz 9600bps FSK CW”
I’ve added CP7 (DAVE) in db (temp norad id 99995) and I’m going to add the two ELFIN and SurfSat that are in the same rocket too. Unfortunately haven’t found TLE yet.
That does look good for DAVE. This really short observation looks promising for SurfSat, although the frequency might be off by 10kHz (I double checked the frequency coordination but it agrees with our db entry).
After some discussions on #cubesat channel, we learned that FCC regulations limit transmissions of cubesats at IARU coordinated frequencies.
So, in ELFINs case the beacon couldn’t be turned off so it transmits. We have also been requested to give more priority to ELFIN-B as it is only heard, while ELFIN-A was heard and commanded.
For SurfSat there was the ability to turn off their beacon, so this is why we haven’t got it yet. Maybe if there is a station near their ground station could get something.
I have done some observation of ELFIN-B. Observation 251749 Observation 251748 Observation 251747
There seem to be some sort of satellite signal around expected frequency, but I’m not sure if this is Elfin or some other satellite at simmilar orbit. If this is Elfin-B, then TLE seem to be a bit off and frequency may be off by some 4kHz.
Jed SQ2DK
Thanks, I didn’t see those. So in 251748 you can see horizontal lines of ELFIN-B in the middle and on the left edge half of the lines of ELFIN-A. Unfortunately no signal on the other two, the almost vertical lines, probably are from other satellites.
In 251748, if you listen to the audio at the times of the horizontal lines (it is a shame that the waterfall scale is seconds while the audio scale is in minutes), you can hear the noise spectrum change, so this does seem to be a very weak signal.
The issue with waterfall/audio time scale is fixed in dev (thx @kerel)… soon fix will be available in production too
After request on irc/matrix we are going to share again the time between DAVE, ELFIN-A and ELFIN-B equally (instead of prioritize ELFIN0-B). About SurfSat as soon as we have info about when/if it transmits we will try to receive it.