janospetrik wrote:
A lot of AM stations in my area (East coast) are difficult to hear
because of interference by a Spanish language station.
I was told awhile ago that it was because of a high-wattage station in
Cuba that was broadcasting because the US. was broadcasting to Cuban
listeners.

Does anyone have more information, or is this just another conspiracy
theory?

(see Ron Hardin's reply for more useful information)

Which frequencies? During the day, at night, both?

(I think I'm misreading your post, but do you mean many AM stations are
receiving interference from **the same** Spanish-language station? Or
is more than one Spanish-language station involved?) Does this
interference exist every night, or is it much worse some nights than
others? How far up the East Coast are you? (there's a BIG difference
between Fort Pierce and Boston, as far as Cuban interference is concerned)

--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com