75 Ohm Dual Rotor Manual Attenuators

The JFW 75 Ohm dual 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 on your RF test bench or mounting it to a panel, the JFW dual rotary attenuator makes adjusting attenuation quick and easy.

Dual Rotor Attenuator

All of these 75 Ohm manual step attenuators are dual rotor type which means that each attenuator has two knobs.  For example our 0-110 x 1dB step models have a 10dB step knob and a 1dB step knob.  The attenuation setting of the unit is the sum of both knob settings.

Panel Mount

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

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

JFW Model #	Impedance	dB Total	dB Step	Frequency Range	RF Input Power	RF Connectors
75DR-031	75 Ohm	50 dB	1 dB	DC-1000 MHz	1 Watt	BNC, F, N
75DR-006	75 Ohm	80 dB	1 dB	DC-600 MHz	1 Watt	BNC, F, N
75DR-009	75 Ohm	70 dB	1 dB	DC-1000 MHz	1 Watt	BNC, F, N
75DR-018	75 Ohm	30 dB	1 dB	DC-1000 MHz	1 Watt	BNC, F
75DR-021	75 Ohm	30 dB	1 dB	DC-2100 MHz	1 Watt	BNC, F, N
75DR-022	75 Ohm	11 dB	0.1 dB	DC-1000 MHz	1 Watt	BNC, F
75DR-026	75 Ohm	50 dB	1 dB	DC-1500 MHz	1 Watt	BNC, F, N
75DR-028	75 Ohm	11 dB	0.1 dB	DC-1218 MHz	1 Watt	BNC, F, N
75DR-029	75 Ohm	80 dB	1 dB	DC-1218 MHz	1 Watt	BNC, F, N