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Dave,
the stuff I'm describing is not encrypted, just free-to air weatherfax
for boaties, and in the case of the satellite stuff, also free as long as
you have the method to decode it into a picture.
Both formats are just simply a line by line scan method exactly like the
way a picture is drawn on your old analogue television, only this
was 2 lines per second....very slow.
Decoding the sat stuff wasn't quite so simple. You ideally needed a
VHF radio capable of something about halfway between your 'Narrow'
deviation of 18kHz....like FM radio stations and 'wide' like a TV
audio 150kHz.
That's why I modified the IF in the FROG so that it could display the
typical deviations of the satellite picture.
If your scanner can do this, then you're halfway there.
You also needed a good low noise masthead amplifier and a
purpose built 'turnstile' or Lindenblad antenna.
If you're interested just Google 'Wxsat' which is a more modern
freeware software that can let the sound card on your PC receive
the audio from your scanner.
pm me for details if you're interested.
Steve
Last edited by kinetic; 10-05-2009 at 11:41 AM.
Reason: more spelling gumbiness
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