For the next few days, starting October 4, Radio Martí is
transmitting a minute of MFSK16 centered on 2500 Hz, daily, 
according to the following schedule:

0558:40 UTC    1180     6030     7405 kHz
0758:40 UTC    1180     5980     6030 kHz
0858:40 UTC    1180     5980     6030 kHz

Each transmission is 57 seconds.

The 1180 kHz is medium wave, from the Florida Keys. The shortwave
frequencies (5980, 6030, and 7405 kHz) are all via North Carolina.
You will probably hear noise on the frequency.