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Old February 5th 07, 08:41 PM posted to rec.radio.amateur.antenna
Yuri Blanarovich Yuri Blanarovich is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 170
Default The Awesome Razor


Razor Beam applies to optimized Quad - Yagi elementary antenna design,
not
to be confused with Overback's "Quagi" - where he replaced reflector and
driven element in a particular Yagi design.
I have series of designs from 3 el. quad to 10 el. Razors.

Razor was named after being so sharp, cutting through the pileups and
shaving the bands clean, jus' one chapter in my fooling with antennas.


And there is/was my confusion. You were referring to a valid antenna
design where I thought you were joking around.

Sorry.

But being interested in quad endfire arrays, I will read of your work with
great interest.

Regards,

Chris


Hi Chris,

Based on my hardware 2m modeling, my and others conclusion is that going
over 5 elements, quad array does not provide more gain per boomlength than
Yagi.
This is why I tried to come up with design that would provide maximum gain
per boom length, 50 ohm impedance and clean pattern - Quad/Yagi combination.
My conclusion then was that one quad element before and after driven (cell)
element and rest should be Yagis.
Now I am playing with dual polarization designs, where quad elements are
only "dumb" enough to not know which polarization they are at. By switching
or phasing driven element one can take advantage of that property.
That, combined with new SDR and DSP radios is opening up whole new area.

73 Yuri, K3BU