Radio Rebelde 530 kHz depending on your distance to Cuba you maybe able to hear this station, at night. Also Canada reported in the NE. There are various clear channels on the rest of AM broadcast band. 160 meters or what is left of it is just higher in frequency than 1.7 mHz. One station is 1210 KGYN Guymon OK, 10,000 watts directional at night. I am familiar with their three tower end fire array. It is what inspired me to make a two element switchable mobile array for CB. It worked and SWR 1:1.1 on 19, not over 1:1.4 on the ends (ch1 and ch23 at that time.