The AM-417 amplifier is used as an antenna mast mounted amplifier, close to the antennas set. It is used to amplify the signal to the level required for a dozen or so receivers.
Due to 12 V power supply voltage, it can be powered from a typical power adapter with separator. It can be also powered via coax cable from some used within an installation amplifiers e.g. CA-215. It is possible to power the amplifier from the CA-215 amplifier output. The amplifiers are characterized by low noise ratio.