[Elmers] Building Mag Loop antenna

Brian Roode bgroode at gmail.com
Sat Dec 11 12:51:36 PST 2021


I believe the four screws on the side in the first photo are for the stationary and variable plates of each capacitor.   They don't appear to be ganged together.   You should be able to trace the screws back to the series of plates using an ohmmeter to verify.

Brian
NJ6N

> On Dec 11, 2021, at 12:18 PM, Robert Doty via Elmers <elmers at soara.org> wrote:
> 
> I am trying to build a Mag Loop Antenna for use in HOA restricted housing.
> I have made the loop of 3/8"id copper pipe. the primary loop is RG58 coax. I was trying to use a length of the coax as a capacitor, but found a reasonable priced open air variable capacitor.
> It is of course used and no instructions came with it. Did not realize it was a ganged capacitor. I cannot figure out how to wire it. I want the capacitors in parallel so I can have a wider frequency range.
> Used to be an electrician but this has me stumped. I have attached photos of all sides of the capacitor. Any help would be very gratefully appreciated.
> Thanks
> Bob 
> N5KZV
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