[Top] [All Lists]

Re: [TowerTalk] Dipole puzzle

To: "William Q Meeker" <>
Subject: Re: [TowerTalk] Dipole puzzle
From: "Tom Rauch" <>
Reply-to: Tom Rauch <>
Date: Sat, 15 Oct 2005 14:38:56 -0400
List-post: <>
> After pulling up the antenna, I used my MFJ259B to check
things out,
> expecting the need to fine-tune the location of the
feed-point. I was
> surprised to see that I was measuring something close to
> predicted results above 3MHz or so (e.g., a nice resonant
point in
> the middle of the 80-meter band), but totally weird
results in the
> 160 meter band---R values on the order of 1 or 2 ohms
(where EZNEC
> predictes R in the 100s'). I then brought my radio outside
to confirm
> the results. Infinite SWR in the 160 meter band, but
sensible things
> below 80 meters.
> I also pulled the balun out to see what would happen.
> predictable results below 80 meters (above 3.5MHz) and
weird results
> (R close to 0) in the 160 meter band.

It isn't the type of wire.

What kind of balun do you have?
How far off center is the feedpoint?

73 Tom


See:  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.

TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>