[TowerTalk] Using a dip meter

[Dave Hachadorian]

----- Original Message ----- 
From: "Scott McClements" <kc2pih at gmail.com>
To: "Dave Hachadorian" <K6LL at arrl.net>
Cc: "Towertalk Reflector" <towertalk at contesting.com>
Sent: Friday, March 21, 2008 2:23 AM
Subject: Re: [TowerTalk] Using a dip meter


> On 3/20/08, Dave Hachadorian <K6LL at arrl.net> wrote:
>
>> The quad loop must be continuous, with no insulators.
>
> Dave - Thank you for addressing my question. You point out 
> something
> here - this was my 75 meter loop - which is not parasitic. 
> Its driven,
> so its broken at the feedpoint with an center insulator. 
> Would that cause a problem?

Yes. That's the problem. Remove the feedline and put a 
temporary jumper across the insulator, and you will read the 
resonant frequency of the loop. You could build your little 
coupling loop into this jumper, and remove the other little 
loop.

>The manual gave one example for reading
> antenna resonance - a ground mounted vertical. It showed a 
> loop in the
> vertical section of the antenna.

For a vertical, the loop should be between the vertical 
radiator and the ground system. Maybe they showed a ground 
at the base of the vertical, and a small loop just above the 
ground. That is essentially the same thing as a loop between 
the vertical and ground.

Dave Hachadorian, K6LL
Yuma, AZ



















.