50 Ohm Dual Rotor Manual Attenuators

The 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 For your specific application, please contact JFW for assistance or use our Inquiry Form. [lt id="65"]

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. Frequently Asked Questions For your specific application, please contact JFW for assistance or use our Inquiry Form. [lt id="54"]

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

[lt id="79"]

75 Ohm Models

[lt id="130"] 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.

Rocker Attenuators

The JFW rocker attenuator makes adjusting attenuation quick and easy.  Use the rocker switches on the top plate to manually set your desired attenuation.  These are passive attenuation devices that require no DC Voltage for operation. Each rocker switch controls an individual attenuation step.  Activate multiple rocker switches simultaneously to set combinational dB settings. [lt id="24"]