Dear OM, CT1DMK My name is Yoshi Takeyasu, radio amateur JA6XKQ. This topic is old, but I would like to report my result of detecting Voyager 1 signal in your wave file. Attached figure is a spectrum similar to G3RUH's analysis on your homepage. I followed your and G3RUH's notes and processed the wave file using parameters as below. Software tool : MATLAB FFT : 16384 points (RBW = 1.35 Hz) Number of FFT frame : 1209 Pass band amplitude equalizing : 128 point smoothing Doppler shift rate : -0.7923 Hz/sec Correction of Doppler shift : frequency domain after FFT Video filter : 4 point smoothing There is no new findings in my result, but it is so amazing that your dish could detect Voyager 1. Thank you very much for the exciting material. 73 - Yoshi Takeyasu / JA6XKQ http://www.terra.dti.ne.jp/~takeyasu/