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

Great item. I have an 8 element 2 meter quad and a 14 element 440 attached to a Yeasu FT857. There is one antenna port for Vhf/UHF. Previously i was using a switch which is inconvenient when working VHF contests. I have it on the unit, have checked SWR and through it n both bands it is essentially the same as on the antenna directly. I hear the Mighty Fine Junk comment on MFJ equipment so much but I have several pieces of their equipment. They cost about 1/2 of what most other vendors charge for the same item. All have served me well. This came with one anomaly, the label was on 180 degrees off. But one look told me hat to do and i relabeled it. It wasnt worth sending back. I did notify MFJ so they can see if this as a one time failure or if they have a problem.

Makes the use of separate antennas in my shack easy. I havent found a noticeable change in swr with this in line.

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.

Works great. Two different radios into one antenna.

Plug and play with great specs

Does the job. Good value.

Just hooked up to two trancievers and two swr meters to one dual band antenna last night swr is pretty much perfect for both trancievers, both recieve fine!

Looked like it was used and previously disassembled. Decided to get a refund.

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.

Worked flawlessly and was just what I needed. Good separation between VHF and UHF. SWR below 1.3:1 up to about 400 MHz, 1.5:1 up to 500 MHz. Good quality and value for the price.