Viljo Allik, ES5PC, a member of ESTCube-1 student satellite team at Tartu Observatory, Estonia writes: “I did some receiving experiments today, both on 2217.5 MHz LHCP and 2270.4 MHz RHCP. The RHCP carrier is a few dB-s stronger than LHCP. Up to 10 dB carrier to noise can be seen in 1Hz bandwidth with my 4.5 m moonbounce dish at home and G4DDK preamp. Using Ettus Research USRP N210 as a receiver. Its reference frequency is locked to a high precision 10 MHz rubidium clock. If any help for a precise frequency measurement of ISEE-3 is needed, I can do it with even higher precision using the 3m dish setup at Tartu Observatory which has more precise GPS locked rubidium clock frequency available. Also I can make SDR I/Q data recordings of the signal and make them available on our webserver.Some SDR screenshots are available at: http://193.40.1.117/public/p_DSN/ISEE3/ Please note that times on SDR screenshots are UTC+3 hours except from the middle of the second 2270 waterfall image where I changed it to UTC. “
Click on image to enlarge.
