[TowerTalk] FW: LP Antenna Question

[Doug Ronald]

Nope. Not a chance. It's a commercial antenna, hundreds sold, and apparently
they all work. I put a photo of the front end of the antenna on my website
on a related page. The image is the first one and if you click on the image
you will get a bigger image which can then be zoomed to clearly show how
they connect the OWL to the coax. Here:
http://w6dsr.com/LP1005AA%20Restoration/index.html
-W6DSR-

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
Richard (Rick) Karlquist
Sent: Saturday, November 28, 2020 13:43
To: Doug Ronald; TowerTalk at contesting.com
Subject: Re: [TowerTalk] LP Antenna Question

"directly connected" are the words that are a red flag for me.
The coax should connect to the OWL through a balun, and the
balun would have the 2:1 transformation built in.  Perhaps the
balun got lost somewhere along the chain of custody.

Rick N6RK

On 11/28/2020 12:37 PM, Doug Ronald wrote:
> I have a question for the group (maybe not the right group): My log
periodic
> dipole array antenna has the coaxial transmission line terminus with a Z0
of
> about 64 Ohms (measured with a VNA, and calculated from basic dimensions)
> directly connected to an open wire transmission line with a calculated Z0
of
> about 123 Ohms. This happens at the very high frequency end of the
antenna,
> Doug, W6DSR
>   
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