At the weekend, October 12, 2024, I received SSTV with the ISS in the country - to the directed antenna of Uda-Yagi from the second floor of the country house.

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The ISS on May 9, 2024 has transmitted pictures for radio amateurs, in accordance with the plan of the experiment October 8-14.

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Updating information on radio amateur companions as of September 2024.

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V one article to cover the whole direction of the amateur hobby - it is impossible to work through satellites. I will dwell only on the most difficult moments - various methods of working through FM and SSB satellites and correction of the Doppler effect .

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Frequency of spacecraft of radio amateur satellite service.

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Without the use of compiler effects on satellites, it is difficult to work. After all, when span, the frequency changes, especially quickly in the middle of the orbit.

There are two ways to compensate for the frequency changes due to the Doppler effect - manual when two independent transceivers (or one with Duplex function) are used and automatically using programs such as GPredict, SATPC32 или Orbitron.

In this article I will try to configure automatic correction of the frequency of transmission and reception in Linux.

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I want to collect on this page all the information about the use for the transfer of the Repiter APRS packages on board the ISS (International Space Station) and other working satellites (PSAT).

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