charlie@oakhill.UUCP (Charlie Thompson) (12/30/88)
Satellite Trackers: I am currently tracking the NOAA satellites and receiving APT data on an R7000 in wideband FM mode. What I want to know is how SYNC is derived from the APT format. I know what the modulation format is but what is a GOOD way to extract the SYNC? or ... Do people ignore the sync and instead depend upon stable sampling of the video to derive a picture with little or no horizontal precession of the picture from 'top' to 'bottom'. I have seen 'asynchronous' systems like this described. Any suggestions? Is there a good source of old G1 FAX machines around that could be used for hardcopy? Any stuff for the Macintosh? I'll be happy to share info with anyone receiving NOAA or the Russian METEOR weather satellites. Thanks! Charlie Thompson WB4HVD Austin, TX