[WARC] antenna modeling result.

James Jefferson Jarvis jj at aprsworld.com
Tue May 22 03:13:11 GMT 2007


I'm not sure it will be useful, but my company has a 50' telescoping mast the 
club could use for FD2007. I also have the base plate and screw in earth 
anchors. I don't have rope or guy wires on hand, but would be happy to buy 
those if somebody else went to the effort of installing (measuring, cutting, 
and tieing) them to the mast. Unfortunately I will be out of town for field 
day.

-Jim

On Monday 21 May 2007 22:08, Clare Jarvis wrote:
> I have modeled a v-beam that uses aprox 500 feet of wire but has 7.93dBd of
> gain at 14.22 MHz.   The front to back ratio is 1:1 and the take off angel
> is 20 degrees.   If anybody is interested I can show nice plots of gains
> and take-off angles.
>
> BTW this model has significant gain on both 40 and 80 meters but is quite
> reactive.  If someone would like to work on how to feed it on these other
> bands then we should be able to lighjt up both the left and right coast on
> three bands.   This antenna should be easy to erect.
>
> 73 Clare
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