[Elecraft] AX1 dipole

[Dan Presley]

Fred-can you share details on this antenna? Not familiar with it. Thanks. 

Dan Presley 503-701-3871
danpresley at me. com 
N7CQR at arrl.net


> On Sep 29, 2022, at 12:08, Fred Jensen <k6dgwnv at gmail.com> wrote:
> 
> I've long wondered why hams haven't done more with Franklin verticals?  KFBK [1530 kHz in Sacramento] uses one located in the southern end of the Sacramento Valley, and it's known as a Flame Thrower.  I think KNBC [680 kHz?] in SF had one back in the 50's sometime too.  They're big at MF, but much more tractable at HF, and they are amenable to loading techniques.  I built one [fairly heavily loaded] out of Buddipole parts I had, and its performance, particularly when I was still activating summits, was surprising.  Like a small loop, the Franklin pretty much ignores ground ... although KFBK's probably likes being located in rice fields filled with water. 😉
> 
> 73,
> 
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
> 
> Jim Brown wrote on 9/29/2022 11:28 AM:
>> David,
>> 
>> I've published a LOT of work on concepts like this.
>> 
>> This ran in National Contest Journal about six years ago. It's based on extensive modeling, and was peer reviewed.
>> 
>> http://k9yc.com/AntennaPlanning.pdf
>> 
>> This was added to the ARRL Handbook or Antenna Book several years ago.
>> 
>> http://k9yc.com/VerticalDipole.pdf
>> 
>> This is an application of the above technique.
>> 
>> http://k9yc.com/80M-FDVertical.pdf
>> 
>> N6BT (original Force 12) has done a lot designs for monoband and multiband verticals that are loaded dipoles. The multiband Cushcraft R-series and Hi-Gain AV-series multiband verticals (companies bought out by MFJ many years ago) are loaded dipoles.
>> 
>> 73, Jim K9YC
>> 
>>> On 9/29/2022 11:09 AM, David Gilbert wrote:
>>> 
>>> You're talking about a horizontal pair of AX1's ... I asked about them oriented vertically.  That wouldn't require them to be as high above ground as you mention and would still allow them to be carried pedestrian mobile.
>> 
> 
> 
> 
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