Thanks for all the information everyone...
The only ARRL antenna book I have is the one on wire antennas, If you could
suggest one that covers yagi antennas in detail, I am sure they still sell
it. I think that I could build one a lot cheaper than buying one and learn
something at the same time.

I would like the best gain possible (who wouldn't) However, I need
something that has the smallest lobe(s) off the sides and back. (I know the
two more or less coincide with each to a large degree.

To give you an idea of what I am trying to do...I have some land in
Richlands NC. I am a member of several ham clubs in the Charleston,SC area
that has repeaters fairly close to the SC,NC state lines. I would like to be
able to make it into one of those repeaters from Richlands, NC. (that may
only work when the bands open up every now and again)
I do not want to key up every repeater on the same freq. to the sides or
the back of the antenna.
So I bow down to the elmers and those who can point me in the right
direction. BTW. the antenna will be at least 60' high but possibley up to
110' high depending on tower funds when I move.

Im good at QRZ and ARRL
Thanks again
Joe KI4ILB
Solar powered ham radio


"Tom Ring" wrote in message
.. .
Scott wrote:

If you don't mind having a little less gain than is ultimately possible
by using an antenna modeling program, the NBS (Nation Bureau of
Standards) designs are pretty straight-forward. For a 6 element Yagi,
here is element lengths and spacings for building with insulated
elements (insulated from the boom, so I would use wood, 1" X 2" X 8.5')

Lengths:
Reflector = 3' 4"
Driven = 3' 2-3/16"
Dir 1 = 3' 7/8"
Dir 2 = 3' 7/16"
Dir 3 = 3' 7/16"
Dir 4 = 3' 7/8"

Spacing:
Ref to Driven = (187.2/Fc) X 12
Spacing between all other elements = (234/Fc) X 12
where Fc is the design center frequency in MHz, ie 146 for the center of
the FM portion). The spacing calculations give the answer in inches.

Then you need to feed it. I use delta matches. Are you good at
qrz.com? If so I can send you a drawing of the feed to get you started
(but you would need an SWR meter that works at 2M to get it adjusted).

Scott
N0EDV


Sorry, I didn't give an alternatives in my previous email. Please see
the K1FO series in the ARRL antenna books. They are among absolutely
the best possible, very replicable,, low build sensitivity, and fairly
short to very long boom plans are available.

If you do not have one of the ARRL Antenna books available, I, or others
here, have copies as needed.

tom
K0TAR