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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
@@ Zeile 1: / Zeile 1: @@
-with amateur radio digital satellite communication, carrier frequencies around 435 MHz
+with amateur radio digital satellite communication, carrier frequencies around 435 MHz are usual (see the tables of satellite operating modes).
-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://symek.de then follow "english", "satellite radio" and "IFD"
-for the receiver. Find "TNC3S" and "FSK9601 modem" for the modem and PC-interface.
+With a FM receiver you get a digital signal, which is specially encoded to exploit the existing channel properties.
+You can go to http://symek.de then follow "english", "satellite radio" and "IFD" for the receiver.
+Find "TNC3S" and "FSK9601 modem" for the modem and PC-interface.
 The data protocol is always Packet-Radio (AX.25), so you can decode it with any TNC.