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85905A Preamplifier, 45 MHz to 1 GHz, 75 Ohms

Product Status: Obsolete | View Service Options
This product is no longer available

A replacement for this product is available:


The Keysight 85905A is a 75 ohm preamplifier used with the Keysight 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.

  • Frequency Range: 45 to 1000 MHz
  • Gain: 20 dB ±1.0 dB
  • Noise Figure: 7 dB maximum at midband