[Elecraft] MP-1 and antenna analyzer

Mon Nov 25 10:14:00 2002

Hi Tim;

When I lived in San Francisco I used an MFJ meter to do antenna work. I was
close to several large broadcast transmiters and their signals would drive
the meter crazy on some of the ranges.  I switched to an Autek and that
solved the problem.  If your close to TV transmit sites or large broadcast
antennas.. that may be your problem.

pete, kn6bi

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Dave Gingrich K9DC
Sent: Monday, November 25, 2002 4:09 AM
To: [email protected]
Cc: Elecraft Reflector
Subject: Re: [Elecraft] MP-1 and antenna analyzer

At 21:26 11/24/2002 -0700, [email protected] wrote:
>Hi folks -
>I'm starting to fool around with antenna measurements on my MP-1 using the
>MFJ analyzer. I'm surprized out how sensitive the analyzer is to almost
>anything! If I bring my hand close to the antenna it will change the SWR.
If
>I put the meter on the floor, rather than holding it, the SWR can change.
As
>soon as I touch the coil sleeve to move it readings will change also (not
>surprized by that though). It's pretty fascinating....but I'm wondering if
>anyone has hints on how to get a more stable reaction for an accurate
>reliable measurement. I'd like to model the antenna and coil with NecWIn
>Plus as an experiment and be able to take accurate readings from the MFJ
>meter....any thoughts on stabilizing the meter a bit more would be most
>appreciated. 73/tim NZ7C

Stabilizing the meter?  Sounds like you need to stabilize the antenna to
me. The meter appears to be working fine.  :)

================================================
Dave Gingrich, K9DC - Indianapolis, Indiana  USA
K2 #2211, K1 #931, QRP-L #2376, ARS #1109,
FPQRP #389, IRLP 4730,  k9dc.ampr.org
================================================

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