|Fig:1 ISS SSTV Signal Transmitted under Call Sign RS0ISS on DECEMBER 20th, 2014|
For receiving and decoding this signal what you need is a VHF receiver or transceiver which can receive downlink signal 145.800 MHz frequency and a PC with SSTV decoding software which supports PD180 Mode (RX Only) like MMSSTV, RX-SSTV or MULTIPSK and a Satellite tracking software or online tracking web support google it there are plenty I used a software called gpredict.
|Fig:2 ISS SSTV Signal Transmitted under Call Sign RS0ISS on FEBRUARY 1st, 2015|
|Fig:3 ISS SSTV Signal Transmitted under Call Sign RS0ISS on FEBRUARY 22nd, 2015|
|Fig:4 ISS SSTV Signal Transmitted under Call Sign RS0ISS on FEBRUARY 23rd, 2015|
|Fig:5 ISS SSTV Signal Transmitted under Call Sign RS0ISS on FEBRUARY 24th, 2015|
|Fig:6 ISS SSTV Signal Transmitted under Call Sign RS0ISS on FEBRUARY 24th, 2015|
|SSTV 19th July 2015 @5:25 UTC Transmission from ISS Russian Service Module to commemorate the 40th Anniversary of the Apollo-Soyuz Mission.|
Monitor carefully the passing time of the satellite above your horizon. You will get two event times like AOS (Acquisition of Signal- Time when you can hear satellite or it is in your range) and LOS (Loss of Signal/Satellite- Time when satellite is out of your range) note down this timings.
There are two methods of decoding one is live decoding and other is standby decoding. Live decoding stands for decoding the signal at the same time its received from the ISS. The standby decoding involves recording of the signal using voice recorder then decode it. This topic Covers both methods.
Other Images ReceivedHere are few images received on February 1st, 2015 at different instance. The images are not complete due to LOS within the signal transmission interval as well as the 3 minutes off time between the transmission and also because of poor elevation.
|Fig: 1a Image received on 5:58 IST February 1st 2015|
|Fig: 1b Image received on 7:19 IST February 1st 2015|
|Fig: 1c Image received on 17:33 IST February 1st 2015|
|Fig: 2d Image received on 20:10 IST February 22nd 2015|
That’s it Congrats, You have just learned to decode an SSTV signal.