50 Ohm Single Rotor Manual Attenuators

The JFW 50 Ohm single rotary attenuator has been a staple tool to RF engineers for over 30 years. Our years of proven quality and performance make our manually variable attenuators right for any RF environment. Whether you are using the rotary attenuator at your RF test bench or mounting it to a panel, the JFW single rotary attenuator makes adjusting attenuation quick and easy.

Single Rotor Attenuator

All of these 50 Ohm manual step attenuators have a single rotor design which means that each attenuator has only one manual knob for adjusting attenuation.

Panel Mount

All JFW rotary attenuators have threaded mounting holes on the front plate behind the knob.  The knob has to be removed in order to mount the attenuator.  We recommend setting attenuator to the 0dB position before removing the knob.

Frequently Asked Questions

For your specific attenuation application, please contact JFW or use our Inquiry Form.

JFW Model #	Impedance	dB Total	dB Step	Frequency Start	Frequency Stop	RF Input Power	RF Connectors
50R-019	50 Ohm	10 dB	1 dB	DC	2200 MHz	2 Watt	BNC, RPT, SMA, TNC
50R-028	50 Ohm	1 dB	0.1 dB	DC	1000 MHz	2 Watt	BNC, RPT, SMA, TNC
50R-029	50 Ohm	70 dB	10 dB	DC	2200 MHz	2 Watt	BNC, N, SMA, TNC, 4.1/9.5
50R-043	50 Ohm	100 dB	10 dB	DC	1000 MHz	2 Watt	BNC, N, SMA, TNC
50R-124	50 Ohm	70 dB	10 dB	DC	2500 MHz	2 Watt	BNC, N, SMA, TNC
50R-137	50 Ohm	80 dB	10 dB	DC	2550 MHz	2 Watt	N, SMA, TNC
50R-215	50 Ohm	1 dB	0.1 dB	DC	2200 MHz	2 Watt	BNC, SMA, TNC
50R-234	50 Ohm	100 dB	10 dB	DC	2550 MHz	2 Watt	N, SMA
50R-246	50 Ohm	70 dB	10 dB	DC	2700 MHz	2 Watt	SMA
50R-248	50 Ohm	10 dB	1 dB	DC	2500 MHz	2 Watt	BNC, RPT, SMA, TNC
50R-249	50 Ohm	1 dB	0.1 dB	DC	2500 MHz	2 Watt	BNC, SMA
50R-254	50 Ohm	1 dB	0.1 dB	DC	2000 MHz	2 Watt	BNC, SMA, TNC
50R-310	50 Ohm	10 dB	1 dB	DC	2700 MHz	2 Watt	SMA
50R-385	50 Ohm	10 dB	1 dB	DC	3000 MHz	2 Watt	SMA
50R-388	50 Ohm	30 dB	3 dB	DC	2700 MHz	2 Watt	BNC, SMA, TNC
50R-397	50 Ohm	70 dB	10 dB	DC	3000 MHz	2 Watt	SMA, N
50R-408	50 Ohm	10 dB	1 dB	DC	3600 MHz	2 Watt	SMA
50R-349	50 Ohm	5 dB	0.5 dB	DC	2500 MHz	2 Watt	SMA