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Author Topic: 14AVQ question  (Read 261 times)

ZL1BBW

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14AVQ question
« on: January 22, 2023, 11:02:02 PM »

In the base insulator of a `14AVQ I recall seeing what I took to be a RFC, the one I am going to have to press into service appears to have had this removed/lost/ dropped off.

Is it of any importance apart from the DC grounding aspect?

Thanks
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.

K9RJ

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WB6BYU

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    • Practical Antennas
Re: 14AVQ question
« Reply #2 on: January 23, 2023, 08:21:30 AM »

What I remember is that the 14AVQ had a shunt coil across
the base to help raise the feedpoint impedance.  It had more
effect on the lower bands where the antenna was electrically
shorter. 

Other than providing a DC path for static discharge, it doesn't
do much on the higher bands.  It isn't really necessary,
especially with a poor ground system where the ground loss
improves the SWR.  But if the SWR is higher than you would
like on 40m, you can add a shunt coil to get a better match,
and it probably won't have a lot of effect on the other bands.

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