[TowerTalk] Matching Double Extended Zepp

Joe Giacobello k2xx at swva.net
Fri Feb 25 09:41:22 EST 2005


I use EDZ's here for 30 and 40M.  Both are fed with balanced line and 
tuned with either a Viking Matchbox or TT 238B.  Since I expect you're 
going to use a tuner to go from balance to unbalanced, why do you care 
at all about having 50 ohms impedance at balanced line input?  It'll be 
different on the other bands anyway, if you use the antenna on bands 
other than that for which it was designed.  I use each of mine on 80, 40 
and 30M.

73, Joe

Tim Duffy K3LR wrote:

>There was a QST article a few years back that gave the matching section details. I think it was designed for 15 meters in the write up. This antenna is also known as two 5/8 waves in phase.
>I scaled the antenna and matching system in the article to 160 meters and put it up at about 200 feet. N3RA (WR3G at the time) and I used it in the CQ 160 CW contest for an all around great
>gain antenna that year before we put up the directional stuff the next year. The extended Zepp worked fabulous for US and DX QSOs.
>
>73!
>Tim K3LR
>
>http://www.k3lr.com
>
>Robert Carroll wrote:
>
>  
>
>>Can someone remind me of the length of 450 ohm ladder line required to match
>>a double extended Zepp to 50 ohms at 40m?
>>
>>
>>
>>Bob W2WG
>>
>>_______________________________________________
>>
>>See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>>
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>>
>
>_______________________________________________
>
>See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk at contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk
>
>  
>


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