project:hgg:open_tasks:data_acquisition_module_-_hamsats
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project:hgg:open_tasks:data_acquisition_module_-_hamsats [2012-01-12 07:52] – angelegt 84.56.182.161 | project:hgg:open_tasks:data_acquisition_module_-_hamsats [2012-01-12 07:54] (aktuell) – 84.56.182.161 | ||
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- | with amateur radio digital satellite communication, | + | with amateur radio digital satellite communication, |
- | are usual (see the tables of satellite operating modes). The signals are FSK modulated, | + | |
- | i.e. there is roughly speaking one of two adjacent frequencies transmitted. The distance | + | The signals are FSK modulated, i.e. there is roughly speaking one of two adjacent frequencies transmitted. |
- | of the frequencies is typically 10-50 kHz. With a FM receiver you get a digital signal, | + | |
- | which is specially encoded to exploit the existing channel properties. | + | The distance of the frequencies is typically 10-50 kHz. |
- | You can go to http:// | + | |
- | for the receiver. Find " | + | With a FM receiver you get a digital signal, which is specially encoded to exploit the existing channel properties. |
+ | |||
+ | You can go to http:// | ||
+ | |||
+ | Find " | ||
The data protocol is always Packet-Radio (AX.25), so you can decode it with any TNC. | The data protocol is always Packet-Radio (AX.25), so you can decode it with any TNC. | ||
project/hgg/open_tasks/data_acquisition_module_-_hamsats.txt · Zuletzt geändert: 2012-01-12 07:54 von 84.56.182.161