: A specific "brown wire" connection is usually required to link the UI-7 board to the
The Icom UI-7 had been sitting in a cardboard box of "Estate Sale – $5" junk for three years before Elias found it.
Programmable Tone Unit can be "sandwiched" or plugged directly into the UI-7 for repeater access. How to Identify Installation
The IC-UI7 is designed for user installation within the transceiver chassis.
The unit typically mounts onto a designated spot on the "Main" or "RF" board, depending on the specific radio model.