Icom Ui-7 Am Fm Unit <Firefox>

It typically includes the IF filters, detectors, and squelch circuitry required for wideband and narrow FM (WFM/NFM) and improved AM reception.

It is highly likely you are referring to one of two things: icom ui-7 am fm unit

| Symptom | Likely Fix | | :--- | :--- | | | Check the 3.5mm plug is fully seated in the REMOTE jack, not the MIC jack. Clean the plug with contact cleaner. | | Volume changes erratically | The encoder is dirty. Spray DeoxIT D5 into the gap around the knob shaft and rotate vigorously. | | PTT transmits but no audio control | The internal logic chip is confused. Unplug the UI-7, turn off the radio, wait 30 seconds, then reconnect and power on. | | F-Key does nothing | The F-Key is not assigned. Go into the IC-706 menu and assign a function (see section above). | It typically includes the IF filters, detectors, and

Icom has not released a UI-7B or updated version. In 2025+, the lack of stereo makes this module feel like a forgotten accessory. For IC-705 owners, consider the Icom SC-239 for external antenna switching or just use a separate receiver. | | Volume changes erratically | The encoder is dirty

If you are currently working on a vintage radio project, let me know:

If you have a similar vintage radio, checking for the presence of this board—or finding one to install—is a great way to unlock a new, clearer world of amateur radio communication.