While many Icom radios from the late 1980s and early 1990s have an "AM/FM" button on the front panel, the circuitry to actually process these modes was often sold as an add-on. Without the UI-7: The front panel button may switch the display mode. The radio will transmit in AM or FM. FM reception will not function. Key Specifications
Plugging the UI-7 unit into your radio unlocks the full capabilities of those physical buttons: icom ui-7 am fm unit
For those who’ve used one:
Restoring the Classics: A Deep Dive into the Icom UI-7 AM/FM Unit While many Icom radios from the late 1980s
The Icom UI-7 AM/FM unit is suitable for various applications, including: FM reception will not function
In most cases, the unit simply snaps into place with a few screws to secure it.
) can have clipped audio due to impedance mismatches. Technical hobbyists often "hot-rod" these units by adding resistors (like a 3.3k ohm) to improve the audio response. Indicator Check: