For the short term, just use TLE's from the ISS. If you are using SatPC32, add this line to the Doppler.sqf and select it from the CAT list. ISS,437800,,FM,,NOR,0,0,sstv_STMSat-1 KO6TZ Bob >Where can I find tracking info for STMSat-1 and Freq??? >Jason >\ N3YUG