Antenna for uhf radio

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Palmy
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Antenna for uhf radio

Post by Palmy » Tue Oct 08, 2013 2:07 pm

hi again, I was wondering if anyone could reccomend me a antenna for a fdp uhf radio, I need an antenna that is preferably telescopic or flexible, that is about 22cm long or so, and very good for getting range on a radio.

Cheers
Sam

Newy1234
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Re: Antenna for uhf radio

Post by Newy1234 » Wed Oct 09, 2013 8:33 am

Are you talking about a handheld radio?

Vkfour
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Re: Antenna for uhf radio

Post by Vkfour » Wed Oct 09, 2013 12:49 pm

Palmy wrote:hi again, I was wondering if anyone could recommend me a antenna for a fdp uhf radio, I need an antenna that is preferably telescopic or flexible, that is about 22cm long or so, and very good for getting range on a radio.

Cheers
Sam
You need to be a little more specific. What is the radio used for? Is it to transmit, or is it receive only? Is is hand held, vehicle mounted or desk top?

Palmy
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Re: Antenna for uhf radio

Post by Palmy » Wed Oct 09, 2013 5:47 pm

sorry, it is used for both transmitting and receiving it is a handheld

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Phantom
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Re: Antenna for uhf radio

Post by Phantom » Wed Oct 09, 2013 6:22 pm

The length of an antenna should be cut dependant on the frequency that it is being used on.

What is the "centre" frequency you are looking at transmitting on

Palmy
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Re: Antenna for uhf radio

Post by Palmy » Wed Oct 09, 2013 9:33 pm

I dont know what center frequency is, my radio is programmed to 477mhz and I plan to use channel 10 20 40

chanjyj
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Re: Antenna for uhf radio

Post by chanjyj » Thu Oct 10, 2013 11:39 am

Palmy wrote:I dont know what center frequency is, my radio is programmed to 477mhz and I plan to use channel 10 20 40
Use the centre frequency as 477. An ideal antenna length is ~ 7cm for a 1/2 wave antenna

Palmy
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Re: Antenna for uhf radio

Post by Palmy » Thu Oct 10, 2013 6:22 pm

I need an antenna that is below 30 cm that I can get the most distance out of, by the way my radio is 5W the standard antenna is 12Cm but that just doesnt cut it, I need maxiumum gain for it

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