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50 Ohm Dual Rotor Manually Variable Attenuators

50 Ohm manual attenuator with dual knobs and SMA femaleThe JFW 50 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 50 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

Click the column headers to sort. For your specific application, please contact JFW for assistance or use our Inquiry Form.

JFW Model #ImpedancedB TotaldB StepFrequency StartFrequency StopRF Input PowerRF Connectors
50DR-00150 Ohms110 dB1 dB0 MHz (DC)1000 MHz2 WattsBNC, N, RPT, SMA, TNC, mini-UHF
50DR-04650 Ohms50 dB1 dB0 MHz (DC)2500 MHz2 WattsBNC, N, SMA, TNC
50DR-05550 Ohms30 dB1 dB0 MHz (DC)2000 MHz2 WattsBNC, N, RPT, SMA, TNC, 4.1/9.5
50DR-06050 Ohms11 dB0.1 dB0 MHz (DC)2000 MHz2 WattsBNC, N, RPT, SMA, TNC
50DR-06150 Ohms80 dB1 dB0 MHz (DC)2200 MHz2 WattsBNC, N, SMA
50DR-06350 Ohms50 dB1 dB0 MHz (DC)1100 MHz1 WattBNC, N, SMA, TNC
50DR-07750 Ohms90 dB1 dB0 MHz (DC)2000 MHz2 WattsBNC, N, SMA, TNC
50DR-08250 Ohms110 dB1 dB0 MHz (DC)2000 MHz2 WattsBNC, N, SMA, TNC
50DR-09650 Ohms30 dB1 dB0 MHz (DC)3000 MHz2 WattsN, SMA, TNC
50DR-11150 Ohms60 dB1 dB0 MHz (DC)2700 MHz2 WattsN, SMA
50DR-11950 Ohms110 dB1 dB0 MHz (DC)2200 MHz2 WattsBNC, N, SMA, TNC
50DR-12150 Ohms110 dB1 dB0 MHz (DC)15 MHz2 WattsBNC, N, SMA
50DR-12550 Ohms80 dB1 dB0 MHz (DC)2700 MHz2 WattsN, SMA
50DR-12850 Ohms30 dB1 dB0 MHz (DC)2500 MHz2 WattsN, SMA, TNC
50DR-12950 Ohms11 dB0.1 dB0 MHz (DC)100 MHz2 WattsBNC, N, RPT, SMA, TNC
50DR-14150 Ohms40 dB1 dB0 MHz (DC)3600 MHz2 WattsN, SMA
50DR-14350 Ohms80 dB1 dB0 MHz (DC)3000 MHz2 WattsN, SMA

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