[Elecraft] Balun suggestions

[Eric Swartz - WA6HHQ, Elecraft]

Ignore my last - I mistakenly replied to an old email.

Eric
/elecraft.com/

On 2/9/2016 1:04 PM, Eric Swartz - WA6HHQ, Elecraft wrote:
> Guys - please take this off reflector until you are in agreement.
>
> 73
>
> Eric
> List Moderator
> /elecraft.com/
>
> On 2/5/2016 8:15 PM, Ron D'Eau Claire wrote:
>> 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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>>> wes at triconet.org
>>>
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>>
>
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