Observation 128245: ITUPSAT 1 (35935)

jjroux · May 5, 2018, 10:58am

Good signal but not CW?

DE8MSH · May 5, 2018, 11:15am

Jup. Seems to be the

GFSK19k2

frequency.

csete · May 5, 2018, 12:25pm

Some satellites transmit CW through FM. I don’t know if that’s the case here or just a broken transmitter that splatters, but the audio does sound like some CW keying is going on.

DE8MSH · May 5, 2018, 1:02pm

Hmmm… The quality isn’t very good… But CW? Hmmm…

fredy · May 5, 2018, 3:59pm

It is CW. You can check previous observations where the drifted transmitter is selected and the signal is more centered and audible.

For example check observation 126845 which repeats “ta1ks itupsat hr”.

EDIT: and I’ve just realized that the drifted one is for GFSK19k2. We need to add a new transmitter for drifted CW too in https://db.satnogs.org/satellite/35935/. Feel free to suggest it.

jjroux · May 26, 2018, 8:24am

Regarding Observation 144850 …Many of these 19k2 are actually FM CW decoded by Corey’s station 2 during this pass https://network.satnogs.org/observations/144008/