That should be trap resonant frequency = SQRT(flow*fhigh), not trap =
sort(floe*fhigh). I didn't check the autocorrect. Sorry - Duffey KK6MC
--
KK6MC
James Duffey
Cedar Crest NM
On May 26, 2013, at 2:37 PM, James Duffey <JamesDuffey@comcast.net> wrote:
>
> Hans - Try:
>
> "Designing Trap Antennas: A New Approach" by Yardley Beers W0JF Ham Radio
> August 1987"
>
> He also had a couple of articles in QEX. A search on the ARRL periodical
> index should lead you to them.
>
> You don't need the article though. The trap should be resonant at the
> geometric mean of the higher and lower frequency, . The antenna length should
> be what a dipole is at this geometric mean frequency and the traps should be
> in the center of each leg.
>
> There are other variations where the trap is not in the center of each leg. I
> think the QEX articles discuss them. - Duffey KK6MC
> --
> KK6MC
> James Duffey
> Cedar Crest NM
>
>>
>
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