75-ohm preamplifier.
The Agilent 85905A is a 75 ohm preamplifier used with the Agilent 8591C cable TV analyzer. This preamplifier, which boosts the signal level, is powered by the analyzer and is stored in the front cover. The frequency range is from 45 to 1000 MHz with a gain of 20 db plus or minus 1.0 dB.
