DJ5KAR and
PA3FXB have succeeded in the first ISS Bounce lately. In principle similar to
EME (Moonbounce), however with some differences: The ISS is much closer to the earth and it
moves with a higher velocity. Anyway, both ham’s succeeded in the first ISS
Bounce ever (in the 23 cm segment). The
limited reflection area of the ISS required more EIRP than when doing an EME
excercise. The earth antennas had a
diameter of 3 meter. The doppler effect
was another difficulty to solve. On the VHF-band the doppler shift should have
been 5 kHz up / down. Using the 23 cm band (1.2 GHz), however , resulted in a shift of
60 kHz (!)
Source:
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