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MWV13222HDS Maxrad/PCTEL Gain NMO Antenna Question

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evfd1625

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I have a PCTEL MWV13222HDS which is supposed to be a wideband 1/2 wave gain VHF antenna with NMO mount, however when I received the antenna it has a whip that is 49 inches long, it does have the spring, the base shows 132-174mhz, the cutting directions with it say for 148-174 MHz the antenna should be cut to 28 1/4" with the spring and 31 1/4" without the spring. I left the whip at 49" and placed it directly on the base. When I had the spring on it seems way too long, but the inches given in the cutting chart do not seem accurate. Does anyone have a correct cutting chart for this model with the spring and without, centered at 155 MHz?
 

kayn1n32008

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I have a PCTEL MWV13222HDS which is supposed to be a wideband 1/2 wave gain VHF antenna with NMO mount, however when I received the antenna it has a whip that is 49 inches long, it does have the spring, the base shows 132-174mhz, the cutting directions with it say for 148-174 MHz the antenna should be cut to 28 1/4" with the spring and 31 1/4" without the spring. I left the whip at 49" and placed it directly on the base. When I had the spring on it seems way too long, but the inches given in the cutting chart do not seem accurate. Does anyone have a correct cutting chart for this model with the spring and without, centered at 155 MHz?

Cut it to 28 1/4".

174-148=26/2=13+148=161.

I know the math looks ugly but With this measurement it will be centred around 161MHz. While a bit high, being a 1/2wave it will make little difference. At the band edges it will be @2.0:1 or less.

I use a Sinclab 1/2wave for my LMR radio and have no issues from 144-174MHz.


Sent from my iPad using Tapatalk
 

cmdrwill

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29 1/4 inches with the spring.

NOTE: Cut the rod from the top, that gives you the full diameter rod and the ball at the top just gets caught in the garage door anyway....
 
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