UHF-Satcom.com - Rasad-1 UHF reception (19/06/2011 21:44:25 +0100)
Don't forget - if you want to chat about Rasad-1 reception, pop along to the #hearsat IRC channel, details here
RASAD-1 (Catalogue # 37675) is the latest satellite launched by Iran on the 15th of June 2011 at about 0914z. The satellite is in a low earth orbit, approximately 236Km x 299Km. The satellite has 2 UHF downlinks, 401MHz and 465MHz. To date, only the 465MHz downlink has been heard at good signal strength, as per the FFT below;
The 465MHz telemetry downlink is not a continuous signal, but has been observed at various ground stations around the world. A sample of the 465MHz telemetry is available here. Media reports on this Iranian satellite speculate that the satellite has image acquisition capabilities on board, if this really is the case, there may be another unknown downlink for high rate image data.
These two pictures are from the FARS news agency, and show the Rasad-1
Further info on the telemetry format can be found at http://www.r00t.cz/Sats/Rasad