Laird Technologies Model # B4503

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Ed_Seedhouse

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will this antenna work for dmr uhf?
I am surprised that someone with a ham license would have to ask. All the antenna does is to serve as a device that allows electrons to move back and forth, thus creating electromagnetic waves. It's up to the transmitter to decide how and when to move those electrons and, so long as the antenna is resonant on the frequency being used the modulation type is irrelevant to the performance of the antenna.
 

AK9R

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The specs for the Laird B4503 state that it is tuned for 450-470 MHz. The amateur radio UHF repeater band is 440-450 MHz. The B4503 might be tunable for amateur radio, but my guess is that it will be a bit too short.
 

N4KVE

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It's a good antenna to use if you need GMRS coverage too. Since most ham transmissions will be 447-450, it's just a few MHz low, but still fine for GMRS. But using a 430-450 antenna on GMRS will be 18 MHz high. I use one every day, & it's perfect. But if you have no need for GMRS coverage, just get the 430-450 version.
 
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