C or Ku are bands, and different bands have different frequencies. C band is 4-8GHz, and Ku is 12- 18GHz. According to your label, this is Ku's satellite receiver.

GOSPELL is a trademark

The second line is the name, single channel low noise down converter (meaning "tuner")

Input:11.7-12.2ghz.

Local oscillator: 10.75GHz

Noise: 0.5 dB (typical)

Gain: 55 dB (typical)

A single local oscillator means that there is only one local oscillator and one local oscillator frequency.

Forget about the c band. . . .