[Elecraft] [KX3] Field antenna tip

[Wayne Burdick]

On Jul 25, 2016, at 1:17 PM, Charles Cupp <w6cup at hotmail.com> wrote:

> Which binding post Wayne?does it make any difference?

No. It's entirely ad-hoc/empirical. I wound up maybe 15-20 turns. Definitely not critical, but not guaranteed, either :)

Wayne
N6KR


> Charly XF1/W6CUP - on the air in Cabo San Lucas 
> 
> Sent from my iPad Mini 64gig---(Life is too short to Fly Coach)
> 
> On Jul 25, 2016, at 12:45, Wayne Burdick n6kr at elecraft.com [KX3] <KX3-noreply at yahoogroups.com> wrote:
> 
>> Hi all,
>> 
>> This weekend I was using the KX2 with a random length of wire tossed in a tree and another random length laid on the ground. Normally the ATU (KXAT2) can handle just about anything, but this particular combination of lengths wasn't working well on 40 m; SWR was still around 3:1 after matching. It probably looked like an end-fed half wave to the tuner.
>> 
>> The wires were connected to a BNC-to-binding post adapter, suggesting a simple workaround. Rather than adjust the length of the wire by cutting or splicing, I simply reeled in a few feet of it and wrapped it around one of the binding posts, forming an inductor of perhaps several uH. 
>> 
>> The ATU was then able to match the antenna on 40 m, as well as the other bands (up through 10 m). 
>> 
>> 73,
>> Wayne
>> N6KR
>> 
>> __._,_.___
>> Posted by: Wayne Burdick <n6kr at elecraft.com>
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