Hello, I'm looking for some advice on what parts to buy from Minicircuits for my particular application. I am looking into using GNU Radio and the USRP (v1) to make an amateur satellite radio suitable for 9600 bps (data-only) communication with the AO-51 Echo amateur radio satellite. I'm focusing on building a radio that transmits on 1268.700 MHz and receives on 435.150 MHz, so I know I'd need two daughterboards for the USRP -- the RFX1200 and the RFX400. respectively. I am looking for at least 10 watts on the L-band uplink from what I can tell from the AO-51 email list.
I have gone to the Minicircuits site, but there are so many amplifier parts, VCOs, etc, and have no idea what I would really need. I think I'll need a preamp on the receiving antenna, and an amplifier on the transmitter side, but I don't seem to see any "preamplifiers" on the MiniCircuits site at all, so I can only assume that preamplifiers are just amplifiers with a few special characteristics. And there are amplifiers that cover a much wider band than I really need, so I'm not sure what I might need. I was actually surprised to find some GNU Radio software that implements the G3RUH modem for 9600 bps data communication ( http://digilander.libero.it/iz2eeq/gnuradio.html ), so I think I've got something to start with there. Any help would be appreciated. -andrew _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
