I have enjoyed reading this thread, and then, it got even more interesting for
me when I saw the ole HP voltmeter mentioned. I have one of these, with the
manual in FB shape as of about 1 year ago. The problem is I am not sure how to
use it for making different antenna related measurements. What I really would
love to know is if there are any available texts or documents that might serve
as an app note to using one of these. If anyone has any notes or publications
or locations where I can go to see practical descriptions on test setups etc
useful for antenna experimentation, please let me know. I would be very happy
to reimburse you for any trouble and/or copy expenses etc if you have something
and would like to share it with me. Much like the MFJ antenna meter, which
people have found dozens of uses for, I wonder if the same is not true for this
ole thing.
73,
Gedas
e-mail w8bya@mchsi.com
online gallery http://gedas.cc
web page http://www.w8bya.com
----- Original Message -----
From: "W0UN -- John Brosnahan" <shr@swtexas.net>
To: "Dino Darling" <k6rix@earthlink.net>; <towertalk@contesting.com>
Sent: Thursday, July 14, 2005 7:45 PM
Subject: Re: [TowerTalk] Measuring electrical length of coax...
At 10:10 AM 7/14/2005, Dino Darling wrote:
>Hello John, how do you test your lines and what equipment do you use?
>
>I've experimented with the MFJ 259B for stubs and phasing lines, but if it
>is critical, I'll order lines from M2. I'd sure like a good method that I
>could employ myself. Also, do you short the end of the coax or leave it
>open. The MFJ book lists both methods.
I am spoiled ROTTEN! In the old days I used an HP-8405A Vector Voltmeter.
But now I use an HP-4195 Spectrum/Network Analyzer. I can cut a tenth inch
off and watch the null shift by a few KHz. It makes it TOO easy.
There are lots of ways with Antenna Analyzers and Grid Dip Oscillators, but
once you have the expensive gear you won't go back. ;-)
73 John W0UN
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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