This paper gives examples of Digital Signal Processing (DSP) applied to the reception ofvery weak CW signals buried in noise. Using a very modest receiving antenna, the technique gaveperfect reception of experimental CW transmissions from W ASZIB via Oscar 13 at ZRO level A,or 30 dB below the satellite beacon. Various DSP algorithms are used, and examples are shownof visualizing and searching for very weak signals buried in noise. The techniques are appropriateto low power moon bounce (EME) commumcation, and have been used to search for weak leakageradiation from the defective Oscar 13 Mode JL transmitter.
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