Thread: 4:1 Current Balun Common Mode Impedance?
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Old November 13th 06, 02:31 PM posted to rec.radio.amateur.antenna
Cecil Moore Cecil Moore is offline
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Default 4:1 Current Balun Common Mode Impedance?
Danny Richardson wrote:
A very narrow range peaked at about 1.58 MHz. (The unit's rated
frequency range is 1-30 MHz.)

I once bought a commercial 4:1 balun wrapped on a
type 2 powdered iron core rated for "all-HF" operation.
The performance sucked. I had the factory measure the
choking impedance and it did indeed suck. Sorry, I don't
remember the exact results but it was designed by Jerry
Sevick, W2FMI, and described on page 34 of "Building
and Using Baluns and Ununs".
--
73, Cecil http://www.w5dxp.com
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