Benchtop Manual Attenuators (Enclosure)

Benchtop manual attenuators are a staple RF test bench piece of equipment.  Simple to control and requires no AC power to operate. These online models have the RF connectors on the rear panel and the manual knobs on the front panel.  For your specific application, please contact JFW for assistance or use our Inquiry Form.

Step Attenuator Design

The benchtop attenuator assemblies use step attenuators internally.  The step attenuators are connected in series with each other.  The attenuation setting of the assembly is the sum of the attenuation indicated by both knobs.

50 Ohm Models

JFW Model #	Impedance	dB Total	dB Step	Frequency Start	Frequency Stop	RF Input Power	RF Connectors
50BR-001	50 Ohm	110 dB	1 dB	DC	2000 MHz	2 Watt	BNC, N, SMA, TNC
50BR-068	50 Ohm	110 dB	1 dB	DC	2550 MHz	2 Watt	BNC, N, SMA, TNC
50BR-092	50 Ohm	81 dB	0.1 dB	DC	1000 MHz	2 Watt	BNC, N, SMA, TNC
50BR-096	50 Ohm	80 dB	1 dB	DC	2200 MHz	2 Watt	BNC, N, SMA, TNC
50BR-104	50 Ohm	80 dB	1 dB	DC	2700 MHz	2 Watt	BNC, N, SMA, TNC
50BR-112	50 Ohm	110 dB	1 dB	DC	2700 MHz	2 Watt	BNC, N, SMA, TNC
50BR-137	50 Ohm	61 dB	0.1 dB	DC	100 MHz	2 Watt	BNC, N, SMA, TNC
50BR-147	50 Ohm	110 dB	1 dB	DC	3000 MHz	2 Watt	N, SMA, TNC
50BR-148	50 Ohm	80 dB	1 dB	DC	3000 MHz	2 Watt	BNC, N, SMA, TNC
50BR-160	50 Ohm	121 dB	1 dB	DC	4000 MHz	1 Watt	N, SMA
50BR-108	50 Ohm	121 dB	1 dB	DC	8000 MHz	1 Watt	N, SMA
50BR-161	50 Ohm	121 dB	1 dB	DC	18000 MHz	1 Watt	N, SMA

75 Ohm Models

JFW Model #	Impedance	dB Total	dB Step	Frequency Start	Frequency Stop	RF Input Power	RF Connectors
75BR-014	75 Ohm	90 dB	1 dB	DC	1000 MHz	1 Watt	BNC, F, N
75BR-023	75 Ohm	70 dB	1 dB	DC	2150 MHz	1 Watt	BNC, F, N
75BR-036	75 Ohm	70.75 dB	0.25 dB	DC	1218 MHz	1 Watt	F

If you can’t find an online model to meet your requirements, please contact JFW. We can integrate any of our manually variable attenuators into a benchtop enclosure per your specific configuration. JFW does not charge NRE’s to design models. We pride ourselves in the ability to offer custom models with the same pricing and delivery as our standard models.