I was missing some of the history. Rightly or wrongly, I've been calling an
off center single wire fed T a Windom. I thought the next step was coax feed
with a choke. I missed the balanced feed version. Gosh. I wonder how well that
works.
Jon
On Sep 14, 2014, at 12:58 PM, Rick - DJ0IP / NJ0IP wrote:
> No choke necessary.
> Also, "OCFD" is not = "OCFD"
>
> It all depends on how far away from the middle the feedpoint is.
>
> Now my question to you, Jon:
>
> What is the difference between feeding with coax or Openwire?
> Why is it ok to feed it with a coax and not with openwire?
>
> IN FACT, if you study up on the history of the migration of Windom to OCFD,
> it was first fed with a single wire, then with openwire, then with coax thru
> a balun.
>
> 73 - Rick, DJ0IP
> (Nr. Frankfurt am Main)
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of k6jek
> Sent: Sunday, September 14, 2014 9:02 PM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] Zepp?
>
> OCFD fed with open wire? I suppose everyone else here understands how that
> would work but I don't. Wouldn't the imbalance of the antenna turn the open
> wire into a radiator or did you have some kind of choke up in the air?
>
> Jon
>
>
> On Sep 14, 2014, at 11:42 AM, Rick - DJ0IP / NJ0IP wrote:
>
>> Don, you put me on the spot here.
>> I have never tried a 44' OCFD.
>> I have tried both the 66' and 132' OCFD fed at that split, fed with
>> open wire, but not the 44'.
>> I don't like to comment on things that I have not actually tried myself.
>>
>> 73 - Rick, DJ0IP
>> (Nr. Frankfurt am Main)
>>
>>
>> -----Original Message-----
>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Don
>> Jones
>> Sent: Sunday, September 14, 2014 5:47 PM
>> To: Discussion of Ten-Tec Equipment
>> Subject: Re: [TenTec] Zepp?
>>
>> I like the 44ft doublet idea.
>> But I would like to try the OCF method mentioned by Rick DJ0IP.
>> Sounds like for a 44 ft OCF antenna the feed point would be 19ft/25ft.
>> Correct?
>> Hoping I can get 10M to play better and would like better efficiency
>> as compared to a 34 doublet on 30M.
>> 73, Don
>>
>>
>> On 9/13/2014 7:29 PM, Augie "Gus" Hansen wrote:
>>>
>>> <snip>
>>> Elecraft sells a nice low-power balun that is switchable as 1:1 or
>>> 4:1. I have used it for field/portable ops, but it's usually set to
>>> 1:1 for the antennas I use (44' or 88' doublet).
>>>
>>> 73,
>>> Gus
>>> <snip>
>>>
>>
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