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Old March 8th 07, 06:28 PM posted to rec.radio.amateur.antenna
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Default Power Dividers / Co-Phasing Harness question


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Hi all,

When co-phasing two identical two meter yagis, is it necessary to use
the "power dividers" sold by the antenna manufacter? If two odd
multiples of 1/4 wavelength 75 Ohm coax is carefully constructed and
run into a T connector, won't this achieve the same thing? Is there a
real peformance difference?

Thanks,
Scott, WU2X


Hi Scott

That pair of 75 ohm transformers will work. I'd suggest that you
consider only 1/4 wavelength for the 70 ohm transformer in each line from
the 50 ohm Yagis. Additional transformer length will effect impedance
bandwidth.
I'd suggest using the "power dividers" unless $$cost is a consideration.

Jerry


 
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