
JFW Industries, Inc., based in Indianapolis (USA), designs and manufactures a wide range of attenuators, RF switches, power dividers and test accessories. Certified to ISO9001:2008, JFW provides high-quality RF components trusted by engineers and laboratories worldwide.
Electronically controlled attenuators for advanced test setups
JFW’s 4-channel programmable attenuators are optimized for 50-ohm systems and controlled via USB interface using intuitive software. Each channel operates independently, allowing engineers to fine-tune signal levels for EMC, RF and wireless test applications.
Available Models
- 50P-2089: 200 – 6000 MHz, 0 – 95 dB in 1 dB steps
- 50P-2137: 30 – 3000 MHz, 0 – 95 dB in 1 dB steps
- 50P-2138: 1 – 1000 MHz, 0 – 95 dB in 1 dB steps
- 50P-2141: 1 – 200 MHz, 0 – 63 dB in 1 dB steps
- 50P-2142: 30 – 3000 MHz, 0 – 63.5 dB in 0.5 dB steps
Technical Highlights
- 50-ohm impedance for precision RF applications
- SMA connectors for low-loss connections
- Switching speed: 4 µs
- USB control with supplied software
- Ideal for R&D, EMC and production environments

Key Benefits
The 4-channel attenuators provide high repeatability, fast switching and easy automation, making them ideal for engineers requiring accurate, configurable signal attenuation in complex RF setups.
Local support
EMCO Elektronik GmbH serves as the official distributor of JFW Industries in Germany and Austria, offering consultation, integration and full technical support for RF components and systems.
Special News 25/2024 – JFW 4-Channel Programmable Attenuators with USB Control