[comp.sys.atari.st] Help with recieving satellite pictures!!!

Friesen@PCO-MULTICS.HBI.HONEYWELL.COM (09/14/88)

A while ago I posted asking about how to recive weather radar pictures.
I got a few replies (and am still checking one or two out), but have
looked in all the directions given to me and haven't found any help.  I
tried to locate some books, but this was to no avail.  I am looking for
any help, many people recommended books, but didn't give titles.  I
asked my local Atari store sales person and he just stared back at me
with a blank look.  I really am interested in this.  Any help is greatly
apprecieated.



"Exterminate!  Exterminate!"--Daleks

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 /***\ I'm trying to fool the line eater /*****\ he always messes up my
asci drawings


Aric Friesen

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glenne@hpnmdla.HP.COM (Glenn Elmore) (09/20/88)

   Try the amateur radio magazine "QST" about two or three years ago. They had an article
or two on demodulating and decoding some satellites for display on
computers, I can't remember if it was Atari 8 bit or PCs... maybe both.  If you
really meant 'weather radar' I don't know where to get info (like the
weather radar that the Weather Channel displays) but if you want visible light
or IR photographs I believe there is still stuff going on at 130-140 MHz 
and certainly around 1.6 GHz where the GOES satellites transmit.
   There is also WEFAX hardware available, again in amateur radio circles, 
which will dump directly to a printer from data presently transmitted by 
wire services and others. Try 

Advanced Electronic Applications
P. O. Box C-2160
Lynnwood, WA  98036
(206) 775-7373


I built a system for copying ESSA and NIMBUS sattellites in the early 70's
but I don't think they are running anymore, though the same modulation
techniques are probably in use (NBFM with 2400 HZ subcarrier modulated
to provide synch and luminance info, 200? lines/min 800? lines/frame.)

Glenn Elmore -N6GN-

N6GN @ N6IIU-1
glenn@n6gn.norcal.ampr
glenne@hpnmd.hp.com