[Towertalk] Shunt Feed Tower

Phil - KB9CRY kb9cry@attbi.com
Wed, 23 Oct 2002 19:59:39 -0500


If I may point out another item.  You mentioned that you're using air 
variables.  Those will be OK as long as you limit your power to 100 
watts or so.  If you're going to use an amp, then you'll be pumping 3Kv 
at some amperage through those, especially the series (gamma) cap.  If 
this is the case, then you'll need to procure vacuum variables with at 
least 3Kv or 5Kv rating.  I did the air variable bit, and on 100 watts 
it was acceptable.  When I eventually brought an amp online, the arcing 
across the cap plates could be seen from the house!  You'll see.  Cu on 
Topband, Phil  KB9CRY

Jim Johnson - KC4HW wrote:

>Want to thanks everyone for the help on the tower.  We added the 
>additional air variable as an Omega Match and is worked real good. 
>
>We are planning to be on 160 during the CQWW SSB..
>
>Thanks again for the help.  
>
>Jim Johnson, KC4HW
>Melbourne, Florida
>http://www.kc4hw.net
>DXCluster RF Connection: 144.95
>Telnet://kc4hw.homelinux.net:8000
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