MFJ Enterprises Original MFJ-916B 1.8-225, 350-540 MHz Duplexer - SO-239

The convenience of ordering on-line and fairly quick delivery made it easy to obtain this well known product. I use it to connect a VHF/UHF Arrow antenna to my radio while operating in a portable location for amateur radio satellite communication.

Nothing rattled inside when I shook it and it works.

A dummy load reads about 2.5:1 SWR on 440. Replace duplexer with a barrel and the same dummy load and cables read <= 1.1:1.

Does the job well. Only complaint is that the SO-239s are a bit short so the mobile antenna I used for in-house crossbanding, the PL-259 would not screw tightly so I had to use some extra connectors.

Works great, no complaints.

As expected!

Grate product for splitting my UHF and VHF signals from one coax to two antennas.

Excelent

I think this is one product MFJ can rightly take pride in. It allows you to operate two radios (a 2 meter and 70 cm radio) on one shared antenna...or feed two antennas to one dual band radio. What is does not allow is repeater operation that requires both bands on a single radio. For example, if you set up your radio to call the repeater on the ISS which has an uplink frequency on the 2 meter band and a downlink frequency on the 70 CM band you can have one or the other, but not both, to the same radio. The workaround is to transmit on the 2 meter and receive on on the 70 CM with another radio.

Works just as advertised.