75 Ohm dual knob manual attenuator with BNC female and attenuation range 0 to 80dB by 1dB steps

75 Ohm dual knob manual attenuator with BNC female and attenuation range 0 to 80dB by 1dB steps75 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.

Frequently Asked Questions

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

JFW Model #ImpedancedB TotaldB StepFrequency StartFrequency StopRF Input PowerRF Connectors
75DR-03175 Ohm50 dB1 dBDC1000 MHz1 WattBNC, F, N
75DR-00675 Ohm80 dB1 dBDC600 MHz1 WattBNC, F, N
75DR-00975 Ohm70 dB1 dBDC1000 MHz1 WattBNC, F, N
75DR-01875 Ohm30 dB1 dBDC1000 MHz1 WattBNC, F
75DR-02175 Ohm30 dB1 dBDC2100 MHz1 WattBNC, F, N
75DR-02275 Ohm11 dB0.1 dBDC1000 MHz1 WattBNC, F
75DR-02675 Ohm50 dB1 dBDC1500 MHz1 WattBNC, F, N
75DR-02875 Ohm11 dB0.1 dBDC1218 MHz1 WattBNC, F, N
75DR-02975 Ohm80 dB1 dBDC1218 MHz1 WattBNC, F, N