[Elecraft] 43 Ft Vertical and Elecraft Tuners

[EricJ]

I had a HyTower in the late 60's. It worked well for me for several 
years in two locations. Istill haven't figured out how it worked 
exactly. I would sure like to hear an explanation of what those stubs 
actually did and how they were determined. Somebody must have written an 
analysis, but I have yet to find one.

Eric
KE6US

On 9/3/2013 8:35 PM, Charlie T, K3ICH wrote:
> Remember the old Hy-Gain "Hy-Tower" ?  It had tuning stubs brought out 
> from various places in order to provide resonance on 10, 15 & 20 M, 
> maybe even one for 40M.  I have a manual around here but am too lazy 
> to go find it. Anyway, I believe it was 57 feet overall and was rated 
> for 80 - 10 M.  You could add a base loading coil and an additional 
> length of wire off the top mast for 160M.  With an adequate radial 
> system, they were the "cat's meow" of verticals back then.   I always 
> wondered how the connection points for those "resonators" was 
> determined. Probably to limit interaction with other bands (??)  Maybe 
> some sort of similar set-up could be done with parallel wire stubs.
>
> I remember trying to tune a four pair parallel wire dipole for 20, 17 
> , 15 and 10 M.  What a bear.  Tweak one band and it would screw up the 
> others.  I finally got it tuned, but had to completely replace all the 
> wires since I had chopped and re-soldered all of them so many times.   
> I used ½" PVC pipe spreaders which kept the four wires about 2" from 
> each other.   Once up, it would have been impossible to re-deploy due 
> to tangles.
>
> 73, Charlie k3ICH
>
>
> ----- Original Message ----- From: "Jim Brown" 
> <jim at audiosystemsgroup.com>
> To: <elecraft at mailman.qth.net>
> Sent: Tuesday, September 03, 2013 11:03 PM
> Subject: Re: [Elecraft] 43 Ft Vertical and Elecraft Tuners
>
>
>> On 9/3/2013 7:30 PM, Fred Jensen wrote:
>>> With the KPA500 at 500W, on 40m, I get a lot of RF from the GAP 
>>> screwing up things like the WinKey, the laptop, and various other 
>>> digital gadgets.
>>
>> The first thing I would do is put a serious ferrite choke on the coax 
>> at the antenna.  If that doesn't fix it, I'd say it's radiation from 
>> the antenna itself.
>>
>> 73, Jim
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