The Keysight 87405C preamplifier improves overall system performance and helps reduce system errors with reliable gain and low noise figure.

Exceptional gain (25 dB) and flatness (±1.5 dB) combined with a probe-power bias connection which eliminates the need for an additional DC power supply makes these preamplifiers the ideal choice for spectrum analyzer or stand alone applications. 4.5 dB noise figure and 25 dB gain helps improve the dynamic range and sensitivity of your test equipment High 15 dBm P1dB increases available power from network and spectrum analyzers DC Bias Volt/Amp: +15 V at 140 mA (nominal); -12.6V to -15V at 3mA (nominal) Rugged portable design for ease of use in the field Probe-power bias connection eliminates the need for an additional power supply

Key Specifications