[amsat-bb] Re: Antenna element and Boom material

Russ Ramirez russ.ramirez at gmail.com
Wed Aug 14 09:46:04 PDT 2013

>I am wondering about going from 1/4 inch tound elements to about 3/8 inch
>would effect the performance of this antenna.

>Mike Hoblinski


It definitely will Mike, but not in a positive/negative way per se. Let me

If you follow an optimized design that called for 1/4 inch round elements
and substitute 3/8 in square tubing, the impedance and SWR bandwidth
characteristics will change in the general sense, and these changes may or
may not be desirable. I do not have the experience with LP antenna
implementations that I do with Yagi or wire antennas, so perhaps there are
other issues to consider. I would suspect that the low SWR points across
the bands would simply shift. Changes in element diameters generally
affects the electrical length, and in your example only a small amount.


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