The 50FH-XXX-50-3 from JFW is a 50 Ohm coaxial fixed attenuator rated at 50 Watts maximum RF input power that operates DC-3000 MHz. The connector is available with dB values ranging from 1 dB to 50 dB, and the heatsink has mounting holes on both ends and on the bottom side. Mixed RF connectors, such as 4.3/10 male or N female, are made available.

JFW offers the 50PA-1144-XX 19-inch rack mount attenuator assembly comprising 50 Ohm sold-state step attenuators with an attenuation range of 0 to 62dB by 1dB steps and operation from 100 MHz to 18 GHz.

The TS05XX Series chip attenuator is designed with increased power handling and requalified to higher power levels. The increased power handling capability is based on individual device attenuation values as follows: 0-1 dB attenuators are rated at 5 W, 2-3 dB rated at 2 W, 4-10 dB rated at 1 W, and 11-20 dB rated at 0.75 Watts.  It can be used for mobile networks, broadcast, high power amplifier, military, and instrumentation applications.

JFW’s 50BR-160 is a 50 Ohm Benchtop Attenuator designed to operate in applications operating from DC to 4000 MHz. It has attenuation range 0 to 121 dB by 1 dB steps and is rated for 1 Watt average RF power.

JFW offers the 50FHAO-XXX-100 100 Watt fixed attenuator designed to operate in the DC to 3 GHz frequency range for military and commercial applications.

JFW offers the 50PA-1068 modular attenuator assembly designed to be connected to up to a maximum of 8 RF modules and operate within the 200 to 6000 MHz frequency range. The RF modules contain individually controlled programmable attenuators with attenuation range 0-95 dB x 1 dB steps. 

JFW’s Model 50P-2101 is a 50 OHM solid-state programmable attenuator with attenuation range 0 to 63.5 dB by 0.5 dB steps. The unit operates bi-directionally with the input rated for +24 dBm and the output rated for +15 dBm.

JFW’s Model 50BA-043-63 is a 50 Ohm benchtop attenuator assembly containing two solid-state step attenuators. These attenuators feature attenuation range of 0 to 127 dB by 1 dB steps and operate within the 100 MHz to 18 GHz frequency range.



Attenuators are the exact opposite of an amplifier. It is used to reduce the intensity of either electricity or sound. For example the digital impulse that is used to drive a speaker may be stepped down to prevent the lower range speakers from failing. An equalizer in music is a form of amplifier and attenuator rolled up into one. It however targets on particular frequency. Every instrument in a musical symphony and even the human voice occupy a certain frequency range. Each not of a violin for example has a very specific frequency. The A string on a violin is exactly 440Hz. Using an attenuator, one can target the exact frequency of 440Hz and reduce its intensity. It can even be attenuated all the way down to zero. If this were to happen then every time an A not of a violin was played, it would not be heard.

This sort of technology is used to clean up sounds of recordings and other sounds in a recording. It is even possible to pin point the frequency range of the human voice then use an attenuator to reduce it to zero. Imagine if one were to take a recording of a song and attenuate just the vocal portion, the song will now resemble a minus one track.

Attenuators have other more sophisticated commercial uses. The can be used to reduce the electrical impulses that were amplified to travel long distances and may still carry strong energy when it arrives, so it needs to be attenuated before it is channeled for processing.