Carolina Windom revisited: 4 to 1 balun does nothing to choke RF?

#16

September 23rd 08, 10:32 PM posted to rec.radio.amateur.antenna

Cecil Moore[_2_] Cecil Moore[_2_] is offline

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Carolina Windom revisited: 4 to 1 balun does nothing to chokeRF ?

JB wrote:
Thanks for the NEC output, Cecil.

I showed how to optimize an OCF for a single band, e.g.
40m. If the 50/120 ohm transformer is link coupled, it will
cause a common-mode current node at the transformer on 40m.
Any antenna system can be optimized if one knows what they
are doing.

For instance, a shunt 1000 pf cap at the twinlead to coax
junction will optimize a G5RV for 75m.
--
73, Cecil http://www.w5dxp.com
"According to the general theory of relativity,
space without ether is unthinkable." Albert Einstein

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