Keysight 87405B Preamplifier: Amplify Your Signals with Precision and Efficiency

Erik Prayoga — Tue, 23 Jun 2026 04:43:15 +0000

Features and Specifications

Keysight 87405B Preamplifier

Product Overview

The Keysight 87405B Preamplifier is a high-performance, wideband preamplifier designed to amplify low-level signals in the 0.01-4 GHz frequency range. It features a 22 dB gain, a low noise figure of 2.5 dB, and a high linearity of +30 dBm IP3. The preamplifier is housed in a rugged, compact package and is ideal for use in a variety of applications, including signal conditioning, gain boosting, and noise reduction.

Features

Frequency range: 0.01-4 GHz
Gain: 22 dB
Noise figure: 2.5 dB
IP3: +30 dBm
Input and output connectors: Type-N (m) and Type-N (f)
Rugged, compact package

Benefits

Amplifies low-level signals
Improves signal-to-noise ratio
Reduces noise figure
Extends the dynamic range of receivers
Ideal for use in a variety of applications

Value

The Keysight 87405B Preamplifier is a valuable tool for engineers and technicians who need to amplify low-level signals in the 0.01-4 GHz frequency range. It is a high-performance, reliable, and affordable preamplifier that can improve the performance of a wide range of applications.

What’s in the Box

Keysight 87405B Preamplifier
Type-N (m) to Type-N (f) adapter
Power supply
* User manual

87405B – Erik Prayoga

Keysight 87405B Preamplifier: Amplify Your Signals with Precision and Efficiency