Radio Angulo suprised me to be heard on 1490 kHz on February 22, 2011. A nice email from Eddy García de la Rosa confirmed this reception.
Here is some additional information received from Mauricio Molano as a comment to this post:
"This is really the tx. of the local station CMKN Radio Mayarí (1KW). As usual the local station relays the provincial one (R.Ángulo) when not producing its own programs. According with Radio Cubana, Radio Mayarí produces 12 hours of programing so the other 12 are filled with the R. Ángulo feed"