uhf repeater

What is the purpose of a UHF repeater at airports.
I live in york and my local airport is Leeds bradford (LBIA) Because im 25 miles from the airport getting atc from the airport is very slim but i can get leeds tower on 455.6125nfm Perfect but on 123.0am i get nothing why is this ?what is the benefit for the airport to use this repeater thanks

Repeaters allow for the signal to be re transmitted over obstructions such as hills or buildings( basically when the line of sight is inturepted). Maybe there are surronding mountains between you and the airport?

2008-03-28 08:32:10 by TOM F

All that remains is to get the duplexer in and tuned. Currently using spatial separation for xmit and rcv antennas. Radios are rated at 25 watts ...

For commercial or business band, the separation is 5 MHz. The repeater typically transmits on the low frequency, example 450.5000 MHz and receives on the high frequency, 455.5000 MHz. Of course the field radios do the opposite.

I think ham radios use the same separation.

2006-08-26 11:25:46 by kanayal

Price: $12.95

My town's police department uses a conventional UHF radio system. How can I tell if they use a repeater and what the input/output frequencies are? Here is the information:
Call sign: WNVG442
http://wireless2.fcc.gov/UlsApp/UlsSearc h/license.jsp?licKey=1228586
is the FCC license page.

They use a simplex system. If you follow your link and click on the frequency tab, it lists the two frequency your town is authorized to use. It only has one frequency for each system, 453.5250 and 453.8500 MHz. A repeater would show two frequencies 5 MHz apart. 453.525 and 458.525 would be a repeater pair. BTW, most police UHF frequencies are in the 460 and 465 area. Such as 460.3000 and 465.3000 for a repeater pair. The 453 frequencies are considered local government, but police are also considered local government and qualify to use them.

2008-04-22 19:00:12 by joshsr0909

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Hi,

I'm looking for a Radio Repeater (as in a hand held kind of radio)
A Repeater that cost under $200.00 Dollars.........

Thanks for everyone that will respond!!!! But make sure you find me one that is UHF range and goes really far!

Thanks Everyone Again!!!!!

--
Daniel

a radio repeater will cost more like $2000. it is a much more sophisticated device than a simple handheld. Also unlike low cost FRS handhelds, a repeater will require licensing and frequency coordination (so it does not interfer with other repeaters). Generally a group of people share the cost and use of a repeater.

2008-03-26 20:10:19 by Daniel C

This question is is in refence to broadcasting from a uhf and vhf tower that I inherited.

a repeater picks up a broadcast signal and re-broadcasts it. So a commercial repeater business would extend the reach of uhf/vhf signals to outlying areas (most likely).

2005-12-20 09:18:59 by postoak