SSTV
Slow Scan TV (SSTV) is a still image transmission method used to transmit and receive images via RF. To send and receive images, you need to connect your amateur radio rig thru an audio interface to your computer. Then use software to send and receive images. Images take about one minute to be received.
Software:
MMSSTV for Windows
These are only a sampling of software
Modes:
Robot
The Robot Research Corporation developed this mode for their own SSTV equipment. The most popular variations are called Robot 72 and Robot 36. Robot is compatible with BW, RGB and YUV color schemes. Robot uses scanline amounts of 120, 128, 240 or 256 lines to transmit the picture. Transmission time varies from about 8 to 72 seconds for the entire image.
Martin
This mode was designed by Martin Emmerson to improve SSTV transmissions. Martin scans 240 lines out of 256 and reserves the first 16 so that the sender has a room for a banner on the top or bottom of the image. This space is usually used to include a message or signature. Martin takes longer than Robot to load the image about 58 to 114 seconds.
Scotty
Like Martin, Scottie was created to enhance the ROM capability of Robot. Scotty was created by Eddie Murphy and became a mode all its own. It scans all 256 lines as well the banner space. Scottie is slightly faster than Martin and can recreate the image in about 71 to 110 seconds and uses RGB as the color scheme.
A very detailed description of how SSTV works.
SSTV transmissions can be found on the following frequencies, the most popular frequencies are Bolded:
160 meters: (LSB)
1890 KHz 160m Band SSTV Call Freq.
1924 KHz
80 meters: (LSB)
3845 KHz 80m Band SSTV Call Freq.
3730 KHz Europe Call Freq.
3733 KHz Europe DIGITAL SSTV Call Freq.
40 meters: (LSB)
7033 KHz 40m Band SSTV Call freq.
7040 KHz Europe SSTV Call Freq. (7043)
7058 KHz Europe Call Freq.
7171 KHz 40m Band SSTV Call Freq.
7171 KHz Europe DIGITAL SSTV Call Freq.
30 meters: (USB)
10.132 MHz – Use narrow mode MP73N
20 meters: (USB)
14.230 MHz 20m Band SSTV Call Freq.
14.233 MHz 20m Band SSTV Call Freq.
14.240 MHz Europe SSTV Call Freq.
17 meters: (USB)
18.117 MHz
15 meters: (USB)
21.337 MHz Digital
21.340 MHz 15m Band SSTV Call Freq.
12 meters: (USB)
24.927 MHz
24.940 MHz
24.975 MHz
11 meters: (USB) – USA amateurs listen only
27.700 MHz France, Australia
27.420 MHz Australia
27.235 MHz Northern Ireland
10 meters: (USB)
28.260 MHz
28.677 MHz
28.680 MHz 10m Band SSTV Call Freq.
6 meters: (FM)
50.680 MHz 6m Band SSTV Call Freq.
50.950 MHz SSB SSTV Call Freq.
2 meters: (FM)
145.500 MHz 2m Band SSTV Call Freq.
144.550 MHz SSB USB SSTV Call Freq.
145.600 MHz 2m Band SSTV Call Freq.
145.800 MHz ARISS (ISS) Downlink frequency
1.25 meters: (FM)
223.850 MHz 1.25m Band SSTV Call Freq.
70 cm: (FM)
430.950 MHz SSB SSTV Call Freq.
