Frequently Asked Questions

1) What would be the part number for a 50F-XXX that had 20 dB of attenuation and SMA connectors? Replace the XXX with the attenuation value, and add the connector type to the end to get a complete number. For example: 50F-020 SMA 50F-003 BNC 50F-010...

1) Are all of the rotary attenuators break-before-make? All JFW rotary attenuators are break-before-make unless otherwise noted on the specification sheet. JFW does manufacture make-before-break models, although none of them are currently in the cata...

1) Why does your 3-way power divider/combiner have four RF connectors? Standard power divider terminology says that an X-way power divider can divide your input signal into X copies. So, a 3-way divider has 1 input and 3 outputs for a total of 4 connectors....

1) What are the pros and cons of solid-state versus relay programmable attenuators? [one_half] Solid-State Pros Typical MTBF = 250,000 hours Excellent attenuation repeatability Switching speed (microseconds) Solid-State Cons...

Common RF Switch Terminology: Absorptive: Ports that are turned off are internally terminated with the proper impedance. (i.e. 50 Ohm impedance models are internally terminated with 50 Ohms.) Self-terminating: This term is used interchangeably w......

1) What is the difference between a Termination and a Mismatch? A termination properly loads a transmission line to reduce reflections. Mismatches are used to create reflections for testing purposes. Here are some examples: 50 Ohm termination:...

1) Are your DC blocks Inner or Outer or Inner/Outer? All of the models listed in the catalog are Inner only. For Outer or Inner/Outer, please contact JFW at sales@jfwindustries.com . 2) What is the difference between an Impedance Matching Pad and... ...