You're probably out of luck.

An actual beam antenna would work, meaning one with large forward
gain and resulting low response in most other directions, which you
aim AT the station you want to listen to. More dollars than most
SW listeners want to spend, if one is even available for the frequency
you want.

A small antenna can produce NULLs which you put on the stations you
don't want, eg. a loop or a loop+whip phased array, but the nulls
are small and everything else still pours in as before, and at night
the direction of arrival is not likely to be stable enough to null
even a single station unless it's a local (and so has a stable
direction).

A long wire has forward gain, though I forget whether it's along
the antenna or broadside to it. It's certainly along in the case
of a beverage antenna, so maybe it's along. Aim that at the
station you want and see if it helps. Be sure to look up the
great circle direction, they're not what you'd think.

--
Ron Hardin


On the internet, nobody knows you're a jerk.