Topband: Delta Model

Herb Schoenbohm herbs at vitelcom.net
Sat Jul 30 18:09:21 EDT 2005


Tod - ID wrote:

> Anyone on the list have an EZNEC model of any of these they feel is put
> together correctly. I am uncomfortable with the ones I have done and 
> their
> results.

Tod,

Please check Earl's (K6SE) delta design for the FO0AAA operation it 
works very well for me and is easily rotatable with pre set ground 
stakes and a single pole support.  A model of Earl's excellent design  
work is found at http://www.OK1RR.com and it includes an awesome 3D 
pattern model.  The wire total is 72 feet with the bottom wire held off 
the ground by 3 feet and being 28 feet long.  The wires to the apex are 
22 feet each and the feed end uses a 1:12 transformer. Zero reactance at 
1.830 and a 40 db FB make this an excellent small space top band RX 
antenna.  With a gain of -34.5 db a pre amp is needed. In my case the 
pre amp is in the shack 100 feet away.

Good Luck,

Herb Schoenbohm, KV4FZ



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