[Elecraft] Twin Lead feedline

[David Cutter]

I've just re-read your question.  So, the twin lead is not for the feeder, 
it's for the arms of the doublet, or possibly both.  I presume to widen the 
frequency response.  There are some interesting ideas for using ribbon as 
antennas.

If it's the pale pink variety, the only thing I would advise is to make sure 
you water-proof the cut ends because it will drink water by capillary action 
and rapidly rot the copper inside.  This happened to me many years ago.  If 
it's the black ladder line, I would say it is quite heavy compared to single 
wires.

Otherwise I see no particular problems.

David
G3UNA


----- Original Message ----- 
From: "Jozef Hand-Boniakowski" <jozef at metaphoria.org>
To: "Robert Tellefsen" <n6wg at comcast.net>
Cc: <Elecraft at mailman.qth.net>
Sent: Tuesday, August 14, 2007 5:02 PM
Subject: Re: [Elecraft] Twin Lead feedline


>I have been using TruValue twin lead at $14/100 feet for the past 4 years 
>on both my G5RV and my 40 meter loop.  Works just fine.  Best bargain 
>around.  Since I only need 40 feet on either antenna, if it goes bad, I 
>just use the other half  of what is left with some to spare.
>
> Jozef WB2MIC
>
> PS.  The antenna wire is leftover electric fence wire now over 22 years 
> old.   Cost per antenna per year is quite low.  :)
>
> Robert Tellefsen wrote:
>> Thom
>> There are various grades of 300 ohm twinlead.
>> Some are very cheap and have pretty skimpy
>> conductors.  Some are good quality.  There is/was
>> at least one version that was suitable for transmitting
>> (power level not stated that I can recall).  If you
>> have some of the good quality stuff, you can probably
>> do 100w just fine.  I'd watch out for the skimpy stuff,
>> though.
>> Good luck and 73
>> Bob N6WG
>>
>> ----- Original Message -----
>> From: "Thom LaCosta" <lacosta at bcpl.net>
>> To: <Elecraft at mailman.qth.net>
>> Sent: Tuesday, August 14, 2007 4:26 AM
>> Subject: [Elecraft] Twin Lead feedline
>>
>>
>>
>>> It's been years since I melted 300 ohm twin lead...
>>>
>>> Can I use it for a 44 foot each side of center doublet at 100 watts out?
>>>
>> I
>>
>>> can't find any other open wire feedline locally, and I need to get
>>>
>> something up
>>
>>> in the air....I keep on walking into the slinky that runs down my 
>>> hallway.
>>>
>>> I'm thinking at 5 watts it will pass...just not sure what will happen at
>>>
>> 100
>>
>>> watts.
>>>
>>> Thanks
>>>
>>> 73 k3hrn
>>> Thom,EIEIO
>>> Email, Internet, Electronic Information Officer
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