Icom Ui-7 Am Fm Unit

It is highly likely you are referring to one of two things:

  1. Locate the "Remote" Jack: On the rear panel of the IC-706/MKII/MKIIG, you will find a small 3.5mm jack labeled "REMOTE." This is not an audio jack; it is a control voltage and data port.
  2. Plug It In: Insert the UI-7’s cable into this REMOTE jack. It uses standard stereo (TRS) wiring.
  3. No Extra Power Needed: The UI-7 is passively powered via the REMOTE jack. No batteries or external power supplies are required.
  4. Mounting: The UI-7’s base is steel. It comes with a small adhesive magnetic disk. Stick the disk to your dashboard or steering wheel hub, and the UI-7 snaps onto it magnetically. Alternatively, use the belt clip for portable operation.

Primary Function

| Feature | Main IC-706 Faceplate | Icom UI-7 Unit | | :--- | :--- | :--- | | | Full radio control (frequency, mode, memory) | Audio volume & squelch only | | Rotary Dial | Changes frequency / Menu selection | Controls Volume (default) | | Push Action on Dial | Enter / Select | Toggles control between Volume and Squelch | | PTT Button | No (located on microphone) | Yes (dedicated PTT switch) | | Function (F) Key | No | User-programmable (e.g., Monitor, Tuning Step) | | Display | Full LCD with spectrum scope | None (LED indicator only) | | Mounting | Requires separation kit (OPC-581/589) | Magnetic back / Velcro / Bracket | icom ui-7 am fm unit

The UI-7 is not a standalone device. It requires a compatible Icom main transceiver. The primary pairings are: It is highly likely you are referring to one of two things:

It uses specific jumper wires (often labeled J21 and J22) to connect the unit to the radio's processing stages. Locate the "Remote" Jack: On the rear panel

If you happen to find an IC-725 at a garage sale, the first thing you should do is peek under the hood to see if a UI-7 is tucked inside—it’s like finding a hidden treasure for your ham shack.

Allows the radio to transmit in AM mode, typically at a reduced power of 10–40 watts. Enables FM Transmit/Receive:

The Case AGAINST Buying One:

Here’s a forum-style post you can use or adapt for a discussion board, Facebook group, or Reddit (e.g., r/amateurradio).