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.

So you say, but there is no such claim at the referenced Web site or
in the Construction Manual. Also, does it make any sense to refer to
it as a balun if it does not have a balanced circuit on the balanced
side?

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?

Exactly my point. Where?

To RF
ground? To a tuned counterpoise? To the sheath of the coax on the
unbalanced side?

If it hurts, don't do it.

Bottom line - a long wire is fed against ground. There is no point to
a balun, unless you intend to use a balanced feedline from the
transmitter to the long wire feedpoint - in which case the balun is
applied in reverse - and of course you will need another balun at the
transmitter to make the transition from the unbalanced transmitter
output to the balanced line.



Bob, W9DMK, Dahlgren, VA
Replace "nobody" with my callsign for e-mail
http://www.qsl.net/w9dmk
http://zaffora/f2o.org/W9DMK/W9dmk.html