[TenTec] OT: Openwire/Window Line and Bad Wx

[Bob McGraw - K4TAX]

As I said in my closing remark in an earlier post:

"I realize that we'd like to eak out every dB we can, but in the end, it
makes little to no difference on HF."

If one can match the load, using what ever means and equipment, then energy 
will be transferred.  On receiving, atomospheric and man made noise will 
overtake any losses in the antenna system and will over ride most all 
receiver noise.

73
Bob, K4TAX




----- Original Message ----- 
From: "Stuart Rohre" <rohre at arlut.utexas.edu>
To: <tentec at contesting.com>
Sent: Friday, August 02, 2013 2:56 PM
Subject: Re: [TenTec] OT: Openwire/Window Line and Bad Wx


> Actual parallel line experience:  One Field Day we arrived at our usual 
> site to put up a 300 foot around horizontal loop.  We usually corner fed 
> the Delta shaped loop at a corner with 450 ohm line we keep in Field Day 
> stocks.  About 50 feet at most was our usual feed, but we had a big wooden 
> spool of various parallel ladder line lengths 450 and 300 ohms.
>
> There had been and continued to be off and on, huge rains.  We could not 
> set up the tent on the ground that was flooded.  The closest paved area 
> was over 200 feet away.  We tied off ladder line to trees and spliced more 
> in with wire nuts, and even added in a stock of 300 ohm ladder line, until 
> we reached the new location of the tent.  The Dentron Super Tuner as 
> always with that loop; was hooked up with a 4:1 balun external to the 
> Tuner.  Static discharge resistors of 150 k ohms went to a ground rod from 
> each conductor right at the balun balanced side.
>
> We found that the Tuner had no trouble matching the mixed up combination 
> of differing impedance ladder lines, nor did we detect any signal losses 
> compared to the usual shorter ladder line feed.
>
> -Stuart
> K5KVH
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