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Compact Yagi Design for VHF?????????????????????????

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February 8th 04, 10:26 PM

Gary S.

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On 8 Feb 2004 13:32:03 -0800, (Dr. Slick) wrote:

Gary S. Idontwantspam@net wrote in message . ..
On Sun, 8 Feb 2004 12:07:21 -0000, "Dave" wrote:

two things you are missing... what frequencies, and just how compact is
compact?? a 3 ele yagi for 2m is only about 3' square, how much smaller
would you want it??

Physics and the wavelength will limit how compact you can get.

Also, this design is more selective not only in direction, but will
cover a narrower frequency range than a vertical.

144 Megs. Just wanna make it as small as possible while retaining
directivity. Perhaps just a driven element and a director (no
reflector)?

I don't care if it's narrow-band.

You might take a peek at this product before you put too much time and
effort in:
http://www.arrowantennas.com/146-3ii.html

They also do ones for 70 cm and dual band, and can custom do ones for
a variety of frequencies.

The first reflector and director add greatly to performance, after
that the effect is less for each addition.

Compact in use and compact to carry are different things, think about
what you actually need.

Happy trails,
Gary (net.yogi.bear)
------------------------------------------------
at the 51st percentile of ursine intelligence

Gary D. Schwartz, Needham, MA, USA
Please reply to: garyDOTschwartzATpoboxDOTcom

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