GMRS mobile antenna tuning - Browning BR-450
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- Опубліковано 30 вер 2024
- Finally getting around to tuning a Browning BR-450 antenna for GMRS. It is a 5/8 over 5/8 wave collinear element with a NMO mount.
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I know about the channels they do have channels 1-7 & 15-22 But NO repeaters they are not repeater capabilites
Drill a hole and get rid of that magnet mount!
I should but have dodged that for a long time.
@@Soladaddy you're only going to get a rust patch under there anyway.
I have to get my SWR Meter in January and do my Browning BR 450 on my GMRS Mobile Radios and see where it goes.Thank you for showing how to tune it.
i used bolt cutters on mine
Is a 1:01 match good for this atenna for gmrs
Yes it is. I'd stop right there.
@@Soladaddy thanks I will 👍
How much do I trim for GMRS Channel 19 I no longer have the sheet for it.
I can't find the sheet either, but the chart had lengths in 5MHz increments. The BR-450 is very broad so cutting for 465MHz will cover all of the GMRS freqs, even Ch19 - 462.650 and repeater 19 - 467.650.
@@Soladaddy Thank You when I get my SWR meter maybe next month I'll try that.
@@Soladaddy I don't have repeaters on my radios I have the Midland MXT 90 and MXT 105 5 watt Mobile Radios.So I don't think they go to 465 MHZ.
@@jamesblack449 If both radios only have channels 1-7 and 15-22, then yes, those channels are in the 462MHz area. Channels 8-14 use 467MHz freqs and if using a repeater on 15-22, the transmissions sends out 5MHz higher, but receive on the same 462MHz.
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I don't trust your swr meter lol! My Browning SWR'S were horrible on those frequencies! I am using a Grand master SWR meter.
A second meter backup the first reading. Granted they are not high end devices, but they agreed.
My instructions said to measure from the center of the center loading coil to bottom of whip.
I tried trimming mine and now my antenna is useless for everything
Ouch. Maybe contact the manufacturer about that.
where was it at on 2 meters?
Don't remember the numbers but it wasn't good.