Hi, > I am trying to collect signal from Thuraya-3. Here is the setup I used: > - USRP N210 + WBX > - LNA with 30dB gain (ZHL-1217MLN) > - Iridium Antenna (I don't have specific antenna for Thuraya right now. > Since Iridium and Thuraya frequency bands are quite close, I suppose it > would work more or less) > > Center frequency: 1530MHz > Sampling rate: 10MHz > > From the spectrum (attached), I can see the Inmarsat signal, but no sign of > Thuraya signal. Anyone has suggestion about how to receive the thuraya > signal?
Several issues to improve : - Your antenna has the wrong polarization, this will definitely kill your signals - You can also try more directional types of antenna like described here : https://gmr.osmocom.org/trac/wiki/Receiver_Setup - Ideally if you have some GSM1800 nearby, it's good to have a filter as those signals tend to swamp / saturate inputs when amplified ... fwiw, I have had some success receiving thuraya by using a GPS antenna and just using a big metal surface as a reflector (to swap polarization). Cheers, Sylvain _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
