I haven't seen this mentioned, but it appears that the Cuban government is using EW techniques to shut down communications.
Jamming on the 40 meter band
Jamming on the 40 meter band
I worked CO7PH out of Cuba in 2008 back when we were toying with openly diplomatic stuff with the country. No doubt its up to each country an their governments as to whether we can actually talk to each other on the HAM bands. Or maybe it was a fluke and he just slipped through the cracks. Shame as HAM radio is suppose to be above politics and religion and put forth good will towards all. I heard the woodpecker in the 70's OTH radar tearing up the bands and also numbers stations. Funny how we take 1 step forward and three steps back over and over again.
What can they do about it? The ARRL has no authority over a foreign government. I suspect that the FCC is already aware of the interference and I assume that they've contacted the State Department. Besides saying to the Cuban government, "Hey, cut it out," I'm not sure anything can be done.What I find interesting is that ARRL is saying nothing about the jamming or the infringement burden on the 40 meter band for American amateurs.
I can remember in the early mid-sixties when I was a kid doing shortwave listening and international broadcast from the United States like VOA were jammed. We could could hear radio Havana, radio Kiev, radio Vietnam, Radio Moscow.
The ham bands were also jammed, it sounded like a loud humming noise up and down the dial. Nothing was allowed in behind the Iron Curtain or into Cuba.