A Terk loop antenna placed near the radio works wonders. It's
an impedance matching device, and brings up the apparent
sensitivity of AM radios that have an internal loopstick (the
usual kind).
It helps most with cheap radios. Top-notch radios for distant
AM reception already are impedance-matched pretty well and so
the additional loop doesn't add anything.
They also help most in the daylight hours. At night your
problem is too many stations, not stations that are too weak,
and you get no help from the loop with that.
1240 in particular is one of the frequencies that gets wiped
out by a thousand other 1240 signals at night.
Picking one loop source at random from Google
http://yhst-38616620066226.stores.ya...advantage.html
You can look yourself for a better price.
The loop really is pretty amazing in the daytime, and maybe
worth getting for that reason alone.
--
On the internet, nobody knows you're a jerk.