[Antennas] Help with feedpoint impedance measurement

[Danny Richardson]

At 07:42 AM 2/19/2007, John wrote:

>   I was wondering what techniques you would employ to make these 
> measurements....  I know a couple, but perhaps there's some new way 
> that would be superior to what I was thinking of.  Once I have the 
> "real world" range of impedances I need to deal with - then I have 
> a point of departure for the tuner/matching network.
[snip]

I have, for about the last six months, been using the AIM 4150. I 
have found it to be extremely useful for such measurements plus many 
more. Info can be found at: http://w5big.com/

I've no pecuniary interest, just passing it along.

To follow up on Bob's suggestion about the Measures' designed 
balanced tuner it in the February 1990 QST and available from members 
only section of the ARRL web site.

Danny, K6MHE



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