I have spent a lot of time playing with Yagi Optimizer trying to get the
best looking designs for Yagis on various bands. I built antennas that I
could remove the elements from to carry in the car and put together rapidly
in the field. My antennas for 50 through 432 MHz are all built on 1 inch
square aluminum booms. All of them are on 12 or 13 foot booms that are in
two pieces.
My 50 MHz Yagi is a 4 element design by VE3BFM that is on a 13 foot boom.
The 144 MHz antenna is 6 elements on a 12 foot boom. The 222 MHz antenna is
8 elements on a 12 foot boom. The 432 antenna is 15 elements on a 12 foot
boom.
The elements for the 6 meter beam are 5/16 inch diameter aluminum tubing.
For all the other bands, the elements are 3/16 inch solid aluminum. The
elements all pass through the square boom through holes close to one side
of the boom (not centered). A screw through that closest side holds each
element in place. Each driven element is mounted on pieces of acrylic
plastic that is bolted to each boom at the appropriate place. I think the
most expensive part of each antenna was the aluminum tubing used for the
boom. They were all far less expensive than any commercially made Yagi.
I can assemble or disassemble each antenna in 10 minutes or less. They've
worked very well for me.
73, Zack W9SZ
On Wed, Jun 12, 2013 at 8:39 AM, Mike (KA5CVH) Urich <mike@ka5cvh.com>wrote:
> On Wed, Jun 12, 2013 at 8:03 AM, beamar <beamar@aol.com> wrote:
>
> > Put some thought into it, Mike. Maybe you will get it right on the first
> pass.
>
> Mike wrote
>
> hehehe ... I doubt that but I am trying to reduce the possibly of
> spending money I don't need to.
>
> Right now construction costs to build the two cheap yagi's for 144 &
> 432 appears to be about half the cost of the Gulf Alpha dual bander.
> And I am sure the GA would be much better constructed even with me
> having to assemble it. :-)
>
>
> --
> Mike Urich KA5CVH
> http://ka5cvh.com
>
> "My cars all run on recycled dinosaurs"
>
> PIO STX-D14 S/E - APIC D1 & D14
> http://harriscountyares.org
>
> Life is hard, church shouldn't be!
> http://fairmontpark.org
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