Contrary to their CW beacon Format, they apparently decided to put the satellites’s callsign (JS1YOI) in the position of the groundstation’s callsign and leave the position for the latter zeroed (000000) instead.
Do note that preamble and sync word is always cut from a demodulated frame. It should check the length and crc before passing it on as a successful frame. Preamble is not supposed to be complete, just to synchronize the frequency and time, sync can be allowed to have garbled bits, the rest should have a crc to validate it.
Hi Tristan i just got audio when BINAR-2 pass over my QTH, around 12:54 UTC. The audio say " VK6FG jo "
im RX around 437.700 Mhz, it outside from ISS Downlink freq.
i need your explain, is it BINAR-2 have a audio beacon?
Thank you
Here are some updated TLE sets, some of them are more accurate than the others, hopefully in the next iterations with more observations coming we will get better results:
I wouldn’t expect too much from the SatNOGS’s integrated automatic CW decoder.
If not I/Q, then record the audio as USB or LSB with about 10 kHz filter (to give the currently not so correct TLEed signal the chance to be in it) and afterwards analyse the file in an audio editor/viewer in spectrogram view (not waveform view). I’m using ocenaudio.
In case of a not so bad signal, it could look like this.
I downloaded the audio from the observation and opened it in Oceanaudio and looked at it under the spectrogram I received two transmission in HK type 2.
