What are its classification, characteristics, main technical indicators and their calculation? What kind of relationship exists between the carrier-to-noise ratio and the nonlinear index?

The main function of a trunking amplifier is to. To offset the amount of attenuation of the signal by the transmission medium (cable) with its amplification of the signal (gain).

Classification: Manual gain and slope equalization amplifier, manual gain and slope equalization plus temperature compensation amplifier, automatic gain control (AGC) amplifier, automatic level control (ALC) amplifier, feed-forward amplifier, bidirectional amplifier.

Features: Adjustable gain, slope compensation, automatic gain control, bidirectional function, adaptable to outdoor working environment, bridging amplifier.

Main technical specifications: nominal input level, nominal gain, nominal output level, in-band flatness, carrier acoustic ratio (HM), nonlinear distortion, AGC and ASC characteristics, noise factor NF, reflection loss, maximum output level. Calculations are omitted.

The carrier-to-noise ratio is inversely related to the nonlinearity index.