Long wire - portable operation KX3 with tuner

[Frank Krozel]

Skimmed through the manual but did not find the reference to length of random wire (in a tree for example) and the trailing wire.
I found 20’ and 13’ respectively in the manual but thought there was some “other” reference for 30’ and something for the trailing wire.  Anyone?
de KG9H
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[Lynn W. Taylor, WB6UUT-3]

The key is to make sure the radiator is not a multiple of 1/2 wave, the
impedance at the end will be too high.

A non-resonant length will work wonderfully.

Here is a good chart: <https://udel.edu/~mm/ham/randomWire/>

73 -- Lynn

On 7/19/2018 5:16 PM, Frank Krozel wrote:

> Skimmed through the manual but did not find the reference to length of random wire (in a tree for example) and the trailing wire.
> I found 20’ and 13’ respectively in the manual but thought there was some “other” reference for 30’ and something for the trailing wire.  Anyone?
> de KG9H
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Please help support this email list: http://www.qsl.net/donate.html
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>

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[KF6BRC]

There isn't a easy answer, as, every location has different compromises -
unless you are backpacking :)  

I have found this site the most informative and to the point about the
length questions - more notability what lengths NOT to use:
http://www.hamuniverse.com/randomwireantennalengths.html

At my QTH, my counterpoise lays on my patio - I've given up on it's length;
my dad has a similar problem and his counterpoise is ground ( he actually
does quite well .. tho all he does is weak signal CW).  

for camping, and i don't want to put up a dipole.  My wire is 84 foot end
fed and a 17 foot counterpoise -> this website:
http://udel.edu/~mm/ham/randomWire/ 

Good luck!!!

Matt - KF6BRC



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[Jim Brown-10]

On 7/19/2018 5:16 PM, Frank Krozel wrote:
> I found 20’ and 13’ respectively in the manual but thought there was some “other” reference for 30’ and something for the trailing wire.  Anyone?

The ARRL Handbook and Antenna Book.

73, Jim K9YC

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