Found this :
Low band signals oscillate the frequencies between 10.7Ghz-11.7Ghz by 9750Mhz
High band signal oscillates the frequencies between 11.7Ghz-12.75Ghz by 10600Mhz.
Here is a useful guide for remembering what satellite bands what DC voltage are and or 22Khz tone will need to be applied by the satellite receiver to receive them.
Vertical Low (VL) – 13V
Horizontal Low (HL) – 18V
Vertical High (VH) – 13V+22Khz
Horizontal High (HH) 18V+22Khz