[BC] Re: FM bays
Tom
radiofreetom at gmail.com
Wed Feb 11 19:02:15 CST 2009
Will the bigger antenna pay for itself in reduced power consumption over
a reasonable time frame?
With the added feedline, the same antenna or new version thereof will
need a higher TPO just to overcome line losses (not much, granted...)
So, you pays yo money and you takes yo chances...
Without opening the calculator (since I don't know the exact numbers for
gain, loss, etc...)
Off the top of my head - PERSONALLY - I'd be inclined to go with the
8-bay antenna: 25kw / ~4 ≈ 6 kw at the flange; / 0.8 ≈ 7.5 kw TPO; Your
Mileage WILL vary.
Run the numbers - too many variables for here, but a spreadsheet can
show you all sorts of "what-ifs"...
Mglin at aol.com wrote:
> Well some of you know the best answer for this. Your help is appreciated.
>
> Here is the question. I am upgrading my FM C3 25 KW ERP 245'AGL, moving
> to 328' AGL
> Currently using OMB 6 bay with 9.5 KW TPO. Bays are .75 spaced
--
Tom Spencer
PG-18-25453 (nee' P1-18-48841)
http://radioxtz.com/
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