On Tue, 03 May 2005 13:40:27 -0400, Ken wrote:

I have made a couple of the NJQRP W1CG low power 4:1 current baluns.
See:
http://www.njqrp.org/balun/index.html

The author says they can be used for longwire. Inasmuch as the
balanced terminals seem to have identical circuitry behind them, it
would not appear to matter to which balanced terminal you connect the
longwire. Where do you connect the other balanced terminal? To RF
ground? To a tuned counterpoise? To the sheath of the coax on the
unbalanced side?


ok.... whether it's a BALUN or an UNUN, I'm using the same type
of "matching device" or "impedance transformation device" with an
end-fed wire that's roughly 1/4 wavelength at 160 meters (so I
guess that's about a 40 meter piece of wire). One "balanced"
terminal goes to the wire, the other goes to a ground rod. I'm
sure it would be just as happy, maybe happier, connected to a
counterpoise instead of the ground rod.

Works quite well.

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