I just joined this group, looks like an interesting place to hang out! Here's my list of Cuban (female) number station frequencies that I've monitored over the last couple of years. 10715,11530,11635,13740,16180,17480,11435,10860,10345,11684. Most of these freqs are very active, I've logged 4 broadcasts in one day but mostly it's hit and miss according to time and freq. Expect to hear these broadcasts any time of the day or night. They are usually broadcast in AM have yet to monitor any of them on USB or LSB. My radios are the Sangean ATS 909x2 with a 25ft. long wire and the SDRuno RSP1 hooked up to the MLA-30 mega loop antenna, nothing fancy, monitoring these frequencies requires diligent listening however since they seem to broadcast randomly.