[AMRadio] Slow scan tv

[manualman at juno.com]

3.500 to 3.600 only permit RTTY and data.
3.600 to 4.000 only permit phone and image.
You can review Part 97 to determine the specific definitions of the
various modes permitted in each segment.
However, I can't find any listings that show anything around 3710/13 as
being used for SSTV. I could also be digital voice activities which are
gaining in popularity.

Some SDR type receiver/software probably could  shed some light on what
type of signal is being transmitted there.

Pete, wa2cwa

On Tue, 27 Dec 2011 20:22:57 -0600 "Jim Wilhite" <w5jo at brightok.net>
writes:
> Rob do you know what that crap is?  I have heard it as well and 
> wondered 
> because it sounds different from SSTV from years back.  In my mind 
> what 
> I have heard should be a data mode and confined below the voice 
> bands if 
> we must have sub bands.
> 
> Jim/W5JO
> 
> 
> ----- Original Message ----- 
> 
> >I think I know what you are referring to--well, what I am thinking 
> of
> > is some sort of two way exchange that is not voice but is not what 
> I
> > associate with SSTV, which to me is modulated data with a sync 
> pulse
> > and an 8 second time to trace the whole CRT screen.  What I hear 
> is
> > more of a roaring hiss--it seems to be some sort of transmission 
> of
> > information but not what I used to hear as SSTV back when I was 
> active
> > in the 70s and SSTV was heard fairly often.
> >
> > Rob
> > K5UJ
>