I'm not sure what the difference in a 20 or a 40 meter antenna would be, but
I built a 2-element 20 meter antenna here that I feed directly with 50 ohm
coax. It is on a 1/4 wave boom with a split driven element plus reflector.
SWR is good all across the band and has decent FB (not outstanding, but how
good do I need on the west coast).
Been using it for 3 or 4 years now and performs better than the TH-3 that it
replaced. Also have a 2-el for 10 built the same way. We'll see how that
one works if 10 ever opens again here in the PNW. Next is one for 15. 73
Tom W7WHY
On 7/18/2010 8:18 AM, john@kk9a.com wrote:
> BTW, it is pretty easy to design a 2el
> yagi with 50 ohm impedance eliminating the need for the match.
>
> John KK9A
>
40M 2L 50 ohm impedance? with reasonable gain/f/b/swr bandwidth? I don't
think so,
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