That was a jammer for the station that started out as Radio Swan and then became Radio Americas. At first it was on 1165, and then moved to 1160 and broadcast from Swan Island, a joint US / Honduras island group very close to western Cuba. But that was in the 60's, although it lasted several decades.
This article is
moderately accurate:
https://en.wikipedia.org/wiki/Radio_Swan
The Gibraltar Steamship Company operated out of shared offices in Miami with the Interamerican Association of Broadcasters and its director was Ramón Bonachea who also ran the AIR (Asociación Interamericana de Radiodifusion) office. I worked with Bonachea to organize the 1967 convention of the AIR in Quito when the local broadcaster committee fell apart so I heard some interesting stories about Swan from him.
At one point, Cuba put the last of the big Czech transmitterrs on 1160 and then 1180 as a tourism station. That era ended as the transmitters constantly needed Svetlana tubes from Russia, no longer available following the fall of the Iron Curtan and the slow death of hollow-state transmitters.
The Czech transmitters were real POS devices. They used proprietary tubes and were rather ancient designs. I was offered several around 1968 in a visit of the sales manager along with an NKVD shadow in what was a prize-winning Russian bad suit. I think they both had rather nervous times, likely trying to figure out how they would report a sales call for a group of stations in Ecuador owned by a 19 year old gringo kid.