For those not familiar, V15 is broadcast on the regular Pyongyang Broadcasting Service, they just throw the numbers station in between other programming on PBS. This mornings broadcast that Moomin is reporting on FM would also have been on HF and MW frequencies. At the time Moomin heard this I was monitoring the same transmission on 6400 kHz and 3320 kHz, also possibly 873 kHz, but audio was too weak to be sure 873 kHz was valid.
T!