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Author Topic: 439.25Mhz Ham TV  (Read 399 times)
KC5SWI
Member

Posts: 17




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« on: September 11, 2003, 04:44:02 PM »

I am running 7.5 watts at 439.25Mhz(solar powered)ATV (am, not slow scan)out of a 11.3 dbd gain ATV antenna mounted at 11' above ground. I receive off a 80' tower via a 11 dbd gain Atv antenna, lmr 400 coax (about 90'), and a PC eletronics downcoverter. At only .45 miles, the picture is visible, but poor (this is over flat terrain). The area is heavily wooded with 30'oak trees. Do you think the lack of "actual line of sight" is causing the picture degragation? It seems 7.5 watts at less than .5 miles should be easy without line of sight, as my 70cm handhelds can communicate at .25 watts at that distance and line of sight claims for ATV exceed 25 miles.
Thanks for reading as any sugestions are appreciated,
kc5swi
Cole
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