The 4 - 1 is designed to accommodate up to four PAT IF board ouputs from a single radio and provide a single IF output. This eliminates the need to install four separate IF outputs on your rig. This is the case primarily with the IC-9100 but the 4 – 1 can be used in any rig that has multiple IF frequencies requiring multiple PAT IF tap boards.
Impedance: 50 Ohms
Frequency Range: 5 – 300 MHz