FUNcube-1 flight model – Image credit Wouter Weggelaar PA3WEG
The FUNcube Team have some new TLEs for object 2013-066B
2013-066B
1 39417U 13066B 13330.15401895 .00003238 00000-0 45063-3 0 205
2 39417 97.7994 42.6429 0062763 180.4144 179.7025 14.77120863 712
These still seem to be the best fit but the team would appreciate any comments.
There is some discrepancy between the original published frequencies for the spacecraft and those we all experiencing in flight.
It is possible that the transponder input bandpass frequencies may also be varying due with the colder than expected temperatures being experienced.
You can track the RF board temp on the telemetry.The RX board temp varies by some 30 degrees C over a full orbit and this will be affecting the oscillator frequencies.
The team do not yet have final confirmation of the object number so the Doppler shift is probably not yet being precisely counteracted by the various Tracking Apps which will be adding to the confusion.
So just at the moment we cannot give precise guidance on the uplink/downlink formula that users should employ but the team are working on it and would appreciate input and observations.
Analysis of the housekeeping data suggests that all is well on-board FUNcube-1, the team are considering switching to continuous transponder mode for a few hours over the weekend to determine the effect that this would have to the on-board temperatures. Presently we are looking at trying this during an early morning pass over the UK on Sunday, December 1 but this will confirmed nearer the time.
FUNcube-1 has had some good media coverage from the BBC in the past few days:
BBC Radio 5 Outriders Podcast, look for the “Outriders 26 Nov 13: Crypto, crosswords and tiny satellites” edition http://www.bbc.co.uk/podcasts/series/pods
Direct link to podcast http://downloads.bbc.co.uk/podcasts/fivelive/pods/pods_20131126-0530a.mp3
BBC One TV and BBC News http://www.bbc.co.uk/news/science-environment-25084547
Capturing FUNcube-1 Telemetry http://amsat-uk.org/2013/11/26/capturing-funcube-1-telemetry/