The discussion of "Yagi vs Moxon" has been interesting, but has omitted the 2
element yagi.
The 2 element yagi has about the same forward gain as a Moxon at around 6.2 dBi
or 4 dBd. The F/B is less than a Moxon, it is forgiving of dimension errors,
feeds directly with 50 ohm coax and you can build one easily and cheap.
"No other antenna has a better relation between gain and expense than the
2-Element-Yagi. One element additional to the dipole will give you 4 dB gain.
Each additonal element will give more mechanical problems and the increase in
gain is only 1-2 dB for the same bandwidth. What says the ARRL Antenna-Book
about this antenna? "The most bang for the buck!" - DK7ZB
The 2 el yagi is a great portable antenna for 6 meters. I keep one in my
compact car along with Radio Shack 5 foot masts. I can put it together and up
20 feet in under 10 minutes. Which brings up another point -- a dipole, Moxon,
or yagi will work much better up at least one wavelength on a mast than one
mounted on a truck bed mobile. A "pop up" 2, 3 or 5 el yagi on a 20 foot + mast
will let a fixed rover have a competitive contest signal. K7ULS uses a 6M5X on
a mast portable with good results.
- Jon N0JK
> The 3 El Yagi will outperform the Moxon by 1-2 dB. The Moxon will be a little
> more compact.
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