[Antennas] Wire Antenna Questions/Opinions

Thu, 07 Nov 2002 16:34:51 -0500

I was fortunate to get a surplused 500' roll of Twinax to use for Dipoles
etc. That and a Balun in the shack make for a nice neat installation.

Dave
WA4EMR

At 02:26 PM 11/7/02 -0600, Tim, N9PUZ wrote:
>On Thu, 07 Nov 2002 12:55:00 -0600, George, W5YR wrote:
>>I use a parallel-coax balanced line made of two runs of RG-213.
>>Shields are tied together at each end, floated at the ladderline end
>>and connected to the tuner chassis at the input end. Zo is 100 ohms
>>so SWR can be higher than ladderline SWR, of course.
>
>I have a portable 44-foot dipole I use at QRP power levels when camping or 
>when we visit my wife's family. Normally I feed it with 300 Ohm twin lead. 
>Particularly when it's setup at someone's home it's sometimes difficult to 
>run the twin lead so the match doesn't get messed up when running through 
>doorways, laying on the ground, etc. From reading this thread and the 
>Antenna Book CD-ROM I don't see any reason that a small, lightweight 
>feedline couldn't be made from RG-174 as long as the power levels are low 
>enough that voltage and current isn't a problem. I have not heard of this 
>being done and perhaps I'm missing something. Is this a practical technique 
>for a portable, balanced feedline?
>
>Tim, N9PUZ
>http://www.qsl.net/n9puz
>
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