Reg:

As usual, your posts inspire thought--and that is a GOOD thing.

At least with this type of balun:
http://home.datacomm.ch/hb9abx/pactor-e-choke.htm

I ask, "Why not?" The insertion loss is negligible. The downside of
its' use is virtually none. The upside is that in the future, as
objects may come into the field close enough to couple with the antenna,
or corrosion-weather-"stretch"-age-"or other factors begin to cause
slight imbalances-- the balun steps in and begins enforcing a "balance."

It just seems one would error on the side of caution and use such a
balun. I know of few better examples of a "win-win situation."

Indeed, the article Roy offered seems like one heck of an argument to
this end...

.... certainly someone not prepared to weigh the "fly chit" they have
picked out of the pepper should just chuck one in the line and rest
assured "it is a good thing."

Warmest regards,
John

"Reg Edwards" wrote in message
...
A choke balun is what is inserted between the transmitter end of the
antenna feedline and the transmitte tuner. Or it can be inserted at
the antenna end of the line.

Questions : How effective is it? To what extent can the percentage
unbalance current on the feedline be expected to be reduced? Has
anybody ever measured it before and after insertion?
----
Reg.