Just put up a 140' dipole with 450 ohm ladderline feed.

I'm using an unbalanced tuner with a Spi-Ro 1:1 balun on the output side of
the tuner. The balun is one of those designed to be used right at the
center feed point of the antenna, with coax as the feedline. I think it
should work out fine being directly at the output of the tuner, with
ladderline going up to the antenna.

However, there is some disconnect between the rig and antenna. I suspect my
balun may be bad internally. What's a good quick and dirty check with an
ohmeter (don't know if these baluns are current or voltage types, so maybe
include a checkout procedure for both kinds).

I'm just starting to fault isolate. Since the balun is a new link in the
chain from rig to antenna, it's my first suspect.