Actually, V07 is not related to HM01 in any way, except both being numbers stations and Spanish language.
V07 is Russian in origin, not Cuban, and V07 is related to E07, G07, M12, and M14, and they are all related to other "family 1" stations. I suspect the one that will be on tonight at 0100z is transmitted from Kamchatka or far eastern Russia, but I also think there is another outlet of V07 for European based assets.
This outlet of V07 transmits one day a week (Sunday morning) for either 2 or 3 transmissions. The time of the transmissions varies across the year. If there is a message to be sent there will be 3 transmissions, probably at 0100, 0120, and 0140z. If there is no message, a "null" message, it will only transmit twice.
T!