[BC] Commercial Station Feeding A Commercial Translator Question
Tom
Radiofreetom at gmail.com
Wed Oct 17 18:37:12 CDT 2007
Tall Tower
Umpteen - element Yagi
Mast-mounted preamp
Luck
not necessarily in that order. :D
Seriously, if you can pull the station in with a typical TV antenna
on a tower, a Yagi cut to frequency and exhibiting ~20 dB gain or
more should pull enough signal for full quieting on the
receiver. Off the top of my head, you're looking at a Yagi with
maybe 7-8 elements. Preamp on the tower with enough gain to overcome
cable losses and still insensitive enough to not overload on the
Yagi's output. Oh, and don't forget the notch filter - preferably
two - one bandpass on the incoming frequency, and one bandstop on the
translator output frequency. (With that much gain,
belt-and-suspenders time!) Also helpful if the receive and transmit
antennas are on separate towers - or at least separated vertically by
more than one wavelength.
Just a rough guess on my part, though... YMMV
Tom S.
Paul B. Walker, Jr. wrote:
>This commercial station in the midwest plains has 60KW at around 300 feet
> in the 95 to 96mhz range.
>I want to know how it can, safely and reliably, feed a commercial translator
>over 90 miles away with any sort of useable signal?
>
>I know radio-locator.com is for "entertainment" purposes only, but R-L
>doesnt even show the FRINGE signal of the originating station coming
>anywhere remotely close to the translator's location.
>
>I'm not schooled too well on translators and such, so forgive me if I've
>asked a silly/stupid question!
>
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