Digital Modes - SSTV
Slow Scan Television
Slow-scan television (SSTV) is a picture transmission method used mainly
by amateur radio operators, to transmit and receive static pictures via
radio in monochrome or colour.
SSTV is basically facsimile.
And facsimile is a method of producing a picture a line-at-a-time. The more
lines, hence more time taken to send them, creates sharper better defined
images.
A basic SSTV station should consist of the following components:
Any suitable Transceiver
Soundcard-equipped PC
Antenna
SSTV Software
(optional) Soundcard Interface
To receive SSTV pictures all
you need is a computer running the software with a soundcard and either a
microphone attached to it, or for best results, a cable to go from your
scanner/rig to your soundcard line in socket.
Software for SSTV is abundant, so the choice of software packages
depends largely on personal preference, as well PC system requirements.
One of the more popular choices is
MMSSTV
by Mako Mora (JE3HHT), a free
program that includes all the best features developed by earlier
programmers.
Frequencies used for SSTV
7.045
14.230
18.162
21.340
28.680
29.550
50.680
145.500
If you want to know more about SSTV, just ask at the next club meeting.
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