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The neat thing about going full digital? You no longer have any idea why
the signal breaks up. PERIOD. The Customer is no longer bothered by interference of any kind. Either it works or not. If your QSO, Phone Call, Mayday, Police call for backup, TV signal gets knocked off the air, you won't have a clue why. I have experimented with Easy Pal Digi SSTV and DRM it is neat but I can rarely get the S/N high enough for a complete transfer. Text is more reliable, but it is hard for me to put my faith in a signal that sounds clean and strong to my ear but with no result. I could have passed several photos on MMSSTV with half the S/N and knew well what they were. Sometimes getting the information through is more important than waiting for conditions to get better to get it perfect. I don't mind being a network admin. but being a radio op isn't quite dead yet. picture breaks up and quits. At other times the same station will give a solid 3 or 4 bars.This happens on all channels. Perhaps atmospheric movement? Lots of dust here in the desert. Any other ideas? Yes, ducting and "ghosting" of the signal(s) due to reflections, etc.--I can see these as being a REAL problem. From your description(s), sounds like "they" just took the exact-same technology/encoding/decoding-schemes and implemented them onto broadcast |
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