MFJ-916BN: The MFJ-916BN duplexer is a series of inductance coils and capacitors that acts as a band-pass filter. Your MFJ duplexer can be used in two different ways.
The duplexer combines the output of the HF/VHF transceiver and the output of the UHF transceiver so that both transceivers can be connected to the same antenna.
The duplexer can also be used to separate HF/VHF transmissions from UHF transmissions so that one transceiver can be connected to two antennas.
The MFJ-916BN is designed for indoor use. If you use the MFJ-916BN outdoors, it should only be used for short periods of time under good weather conditions.
Do not use the duplexer outdoors when there is any kind of precipitation.
Frequency: 1.8-225MHz / 350-540MHz
Power rated: 200W
Isolation: > 55dB
VSWR: < 1.2