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[TowerTalk] CIA-HF as grid-dipper?

To: <towertalk@contesting.com>
Subject: [TowerTalk] CIA-HF as grid-dipper?
From: W8JI@contesting.com (Tom Rauch)
Date: Sun, 14 Jan 2001 19:43:48 -0500
Hi Jim,

> I own a CIA-HF and I've been using it for a variety of antenna
> measurements. I am interested in using it as a grid-dipper with an
> inductive coupling to a coil or trap. Can you suggest how to use the
> CIA-HF in this application? What should I use for a coupling link?

All analyzers like this, including the MFJ, really have no sensitivity 
at all when used as a grid dip meter.

In a conventional dipmeter, the coil is part of a tank circuit. The 
magnetic flux around the coil is extremely high because the 
operating Q of the coil is extremely high (part of an oscillator).

In an antenna analyzer, the Q is low. There is little flux around the 
coil, and it couples poorly to anything you measure.

Personally, I think all these dip kits for analyzers are a waste of 
money.


73, Tom W8JI
w8ji@contesting.com

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