This Guide has been concerned with Fast Scan TV (FSTV), but there are a variety of SSTV systems available.

SSTV takes about 8 seconds to send a complete frame in black & white, or 24 seconds for a colour picture. This means that it cannot be used to send moving pictures. However, the compensation is that the signal is of sufficiently narrow
bandwidth to be fed into the microphone socket of a standard Amateur Radio phone rig. SSTV is permitted on the HF bands
(and also VHF,UHF), and hence world wide coverage is easily achieved.

Common Slow Scan Television Frequencies

Now that the humble home PC has become king, more and
more people are trying SSTV for the first time. The PC receive section is usually based on the LM741 op-amp chip & a couple
of cheap 1N4148 signal diodes.

Shown below are several pictures that I have captured on
14Mhz over one weekend, using the above mentioned interface and a variety of freely available Public domain software. The authors of these software programs have spent many hours of development, so if you use a program you should follow the guidelines set out in the documentation on how the author
wants to be compensated.

The pictures shown below were all captured on a P.C using
either Win SSTV or EZSSTV which runs under DOS even on
the most humble of P.C systems. Another program that will
give good results is DL4SAW, written by a German Amateur.