[Elecraft] Balun suggestions

[Ron D'Eau Claire]

Gee, Wes. It's only basic RF engineering. 

If you'd care to be specific about any objection, please do so. I'll be glad
to get into details on or off the reflector. 

73, Ron AC7AC

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Wes
(N7WS)
Sent: Thursday, February 4, 2016 4:18 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Balun suggestions

I just pinched myself; I'm not dreaming and it's not April 1st, so I guess
you're serious.

You are also so wrong on so many points, I'm not going to waste time trying
to refute or correct them.

Jim, please ignore everything said below.

Wes  N7WS



On 2/4/2016 3:05 PM, Ron D'Eau Claire wrote:
> Your feed line will do the job by itself so no additional "balun" is
needed.
> Keep in mind that a 1:1 balun is really just a length of feed line, 
> usually wound on a toroidal core to make the required length shorter 
> than if it was in open air. The "old-school" baluns were just a pair of
air wound coils.
>
> If your balanced feed line is at least 1/4 wavelength long, the 
> currents will be "balanced" (equal and out of phase) at the antenna. 
> That assumes your antenna is perfectly balanced to provide a perfectly 
> balanced load, which "balanced" antennas almost never do. There are 
> just too many variables. So expect excellent results even with shorter 
> feed lines. The amount of radiation (or pickup) from the feed line 
> even at the rig end is small in any case.
>
> Connect one side of the open wire feed line to the KAT100 SO-239 
> center pin and the other to the KAT100 ground terminal.
>
> 73, Ron AC7AC
>
>
>
> -----Original Message-----
> K2/100 and KAT100 here.
>
> I am changing around my modest antenna configuration now.  I have been 
> using the K2/100 with my AH-4, and now wish to use the KAT100 with 
> balanced feedline antennas.
>
> What balun, homebrew or commercial, if any, should I use?  I almost 
> always run 5 watts, all CW.
>
> 73 de W6OGC Jim Allen
>
>
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