Unkown Frequencies 7.5mhz - 13.5mhz

[Haiku_Guava]

Hello,

Does anyone know what entity or equipment transmits at 7.5mhz, 9.5mhz, 11.75mhz & 13.5mhz?

 

[krokus]

Any HF transmitter, made for full band coverage will do it. These are made for commercial and government use. Many ham radios will do it, when they have a "MARS modification" applied.

There could be any number of entities that cover those frequencies.