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

Works properly for both VHF and UHF bands. When antenna was measured with a SWR meter before this was installed, I had a 1.01 and 15watts on VHf and a 1.2 and 27watts on UHF with a multi-band Tram antenna. After installing this filter, SWR readings increased by .1 for. VHF and .08 on UHF and the watt output for both fell by 2%, which is exactly what I expected. This increase in SWR affected nothing since it was so small and the ratio was under 1.5. I can receive and transmit simultaneously on both bands. This device is a MUST if you are into ham/GMRS.

Works great, no complaints.

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

Works just as advertised.

Worked exactly as it should. The description is a little vague but it is both a duplexer and a diplexer. I use it for a diplexer and it works great!

Nothing rattled inside when I shook it and it works.

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 exactly as advertised. Use it with a cross-band repeater.

It was installed in a go-box with two single band radios and is working very well. Great so far!

Wish it offered a bit better attenuation