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Subject:
From:
Fred Adams <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Sat, 25 Oct 2008 09:49:43 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (114 lines)
Steve, thanks much,  I think I will look into this antenna further. 
Seventythree
----- Original Message ----- 
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, October 25, 2008 9:34 AM
Subject: Re: Windom


> Fred,
>
> Most, if not all of the commercially sold ones use direct coax feed with a
> balun at the feedpoint.  Most use 4:1 baluns, while some use 6:1.   It's 
> the
> off center feedpoint ( roughly 1/3  from 1 end) that makes it work
> harmonically on   other bands.  A full size 80 meter one will also work on
> 40, 20, and 10 meters, as well as 17, 12, and 6 meters.
>
> Very high swr on 30 and 15 meters, but that's life.
>
> 73, Steve KW3A
> ----- Original Message ----- 
> From: "Fred Adams" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, October 25, 2008 9:15 AM
> Subject: Re: Windom
>
>
>>I have never used a windom antenna.  What kind of feedline do you use? 
>>Can
>> coax cable be used?  It sounds like an interesting antenna.  Right now I
>> use
>> regular dipole antennas for 80 and 40 meters and I use a Gap vertical for
>> the other bands.  I do not have space for 160 meters.
>> ----- Original Message ----- 
>> From: "T Behler" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Saturday, October 25, 2008 7:35 AM
>> Subject: Re: Windom
>>
>>
>>>    Steve:
>>>
>>> Well, your SWR's overall are considerably better than mine, but what
>>> really
>>> caught my attention is your good SWR's on 10 meters.
>>>
>>> Mine are not that good, although I can't think of what they are right
>>> now,
>>> because it was not my band of focus when I did my original testing,
>>> although
>>> I know I ttook some readings there.
>>>
>>> Will check those out if I get the chance this week-end.
>>>
>>> Question:  I know we've been through this before, but I'm curious:  How
>>> long
>>> is your Windom?  I think you have the 160-meter version, correct?
>>>
>>> It's back to math again!  (grin)
>>>
>>> 73 from Tom Behler: KB8TYJ
>>>
>>> ----- Original Message ----- 
>>> From: "steve" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Friday, October 24, 2008 9:58 PM
>>> Subject: Re: Windom
>>>
>>>
>>>> Tom,
>>>>
>>>> For what it's worth, here is a peek at the swr of my Windom:
>>>>
>>>> 75/80 meters:  1.8:1 bottom of band, 2.4:1 top of band, nothing lower
>>>> than
>>>> 1.8:1 anywhere  in the band.
>>>>
>>>> 40 meters:  2.4:1 bottom of band, 1.5:1 top of band, 1.0:1 at 7,.200
>>>> khz.
>>>>
>>>> 20 meters: 2.2:1 bottom of band, 1.0:1 top of band, most of ssb portion
>>>> is
>>>> less than 1.3:1
>>>>
>>>> 17 meters: 1.0:1 at mid band.
>>>>
>>>> 12 meters: 1.5:1 across entire band.
>>>>
>>>> 10 meters:  2.4 bottom of band, 2.2:1 top of band, best swr  1.6:1 at
>>>> 28.600
>>>> khz
>>>>
>>>> 6 meters: 1.3:1 across bottom 200 khz of band
>>>>
>>>> You've mentioned 15 meters again.  Mine is 5:1 across the entire band,
>>>> which
>>>> is how it  should be.   Antenna isn't  going to work  harmonicly on 
>>>> that
>>>> band.   If you get low swr on 15 meters, something else is out of 
>>>> whack,
>>>> and
>>>> if you use 15 meter performance as a benchmark  for the antenna, you 
>>>> are
>>>> barking up the wrong tree.
>>>>
>>>> Used mine to  work all 600 plus QSO's  in the PAQSO, but will be 
>>>> pulling
>>>> it
>>>> down in a few weeks to get the 160 meter antenna back up.
>>>>
>>>> 73, Steve KW3A
>> 

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