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Es’hail 2 frequency measurements

After being busy with other projects, I have resumed my frequency measurements of the Es’hail 2 beacons. The last measurement I performed was made when the satellite reached its operational slot at 26ºE. After manoeuvering to this spot, the Doppler was very small, on the order of 0.8ppb peak-to-peak, indicating a very accurate geostationary orbit.… Continue reading Es’hail 2 frequency measurements

Talks

2022-10-08, AMSAT UK International Space Colloquium, gr-satellites and related experiments. PDF slides. 2022-02-06, FOSDEM 2022, Voyager 1 adventures. PDF slides. 2021-10-30, Space and Satellite Symposium – The Role of Information Theory in Space with Special Emphasis on Amateur Radio and Amateur Satellite, online, 32APSK Narrowband Modem for the QO-100 GEO Amateur Radio Transponder. Youtube recording.… Continue reading Talks