Keysight K281C/301 Waveguide Adapter: Connect Your K-Band Devices Seamlessly

Erik Prayoga — Tue, 23 Jun 2026 04:46:42 +0000

Keysight K281C/301 Waveguide Adapter, 3.5 mm (f), K-Band, 18 to 26.5 GHz

Features and Specifications:

Frequency Range: 18 to 26.5 GHz
Connector Type: 3.5 mm (f)
Waveguide Size: WR-42
VSWR: <1.25:1
Insertion Loss: <0.5 dB
Power Handling: 100 W
Operating Temperature: -55°C to +85°C

Product Overview:

The Keysight K281C/301 Waveguide Adapter is a high-performance adapter designed to connect 3.5 mm coaxial cables to WR-42 waveguides. It operates within the K-Band frequency range of 18 to 26.5 GHz, making it ideal for a wide range of applications, including radar, satellite communications, and test and measurement.

Benefits:

Low VSWR and Insertion Loss: Ensures minimal signal loss and distortion, maintaining signal integrity.
High Power Handling: Supports high-power applications without damage or degradation.
Wide Operating Temperature Range: Operates reliably in extreme environments, ensuring consistent performance.
Rugged Construction: Built to withstand harsh conditions, providing long-term durability.

Value to the Customer:

The Keysight K281C/301 Waveguide Adapter offers exceptional performance and reliability, enabling customers to:

Connect coaxial cables to waveguides seamlessly and efficiently.
Minimize signal loss and distortion, ensuring accurate measurements and reliable data transmission.
Handle high-power signals without compromising performance.
Operate in demanding environments with confidence.
Enhance the accuracy and efficiency of their test and measurement setups.

18 to 26.5 GHz – Erik Prayoga

Keysight K281C/301 Waveguide Adapter: Connect Your K-Band Devices Seamlessly