Icom Ui-7 Am Fm Unit Jun 2026
The Icom UI-7 is a hardware-based mod built to strict legacy engineering standards. It integrates seamlessly into the rig’s existing Intermediate Frequency (IF) circuitry, using the radio's primary local oscillators and power stages to generate and decode modulated signals. Specification Internal AM/FM Plug-In Module Board Manufactured By Icom Inc. (Japan) Primary Compatibility Icom IC-725 and IC-728 AM Mode Functionality Enables AM voice transmission FM Mode Functionality Enables 10-meter FM voice transmission & reception Modulation Standards Standard wide/narrow analog AM (A3E) and FM (F3E) Supported Transceivers and Operational Profiles
Just remember that the front panel buttons (like "AM/FM") and the AM/FM icons lighting up on the LCD are indicators that the UI-7 is present, as all of these radios have those controls built-in. Only the transmission capabilities are affected by the optional board.
The UI-7 bridges this gap. By installing this module into an available internal expansion slot, operators unlock the ability to clearly demodulate AM and FM signals, effectively expanding the utility of their base receiver into a comprehensive all-mode monitoring station. Compatible Icom Receivers icom ui-7 am fm unit
The is an optional internal circuit expansion board designed to activate full Amplitude Modulation (AM) and Frequency Modulation (FM) capabilities in classic Icom HF transceivers . Manufactured during the late 1980s and 1990s, this optional unit bridged the gap between basic high-frequency (HF) radios and versatile all-mode transceivers, catering to operators who wanted to access local repeaters or shortwave broadcast frequencies. Purpose and Technical Specifications
Connects directly to the main intermediate frequency (IF) motherboards of compatible Icom rigs. The Icom UI-7 is a hardware-based mod built
Note: The UI-7 is needed in the Icom IC-729, which often comes with these modes enabled or uses a different configuration. Technical Benefits and Specifications
The IPX7 (or IPX8 depending on configuration) waterproof rating means the UI-7 is designed for exposed helm stations. Ideal locations include: (Japan) Primary Compatibility Icom IC-725 and IC-728 AM
When installed, it changes the receiver system to a triple conversion superheterodyne for FM mode (adding a 3rd IF of 455 kHz). RigPix Database Compatible Icom Radios The UI-7 is primarily intended for the following models: The most common application for this board. A standard optional plug-in for this model. IC-721 / IC-721M / IC-721S: Compatible Japanese-market equivalents. Note on IC-729: This unit is not required
Installing the unit is a satisfying project for ham hobbyists. It requires opening the radio's case and plugging the board into specific internal locations (like connectors J21 and J22). Once installed, it allows the radio to support additional accessories like the , which is necessary for triggering modern repeaters.
is now primarily found on the through eBay or specialist retailers like Radioworld UK Expanded Functionality: Installing the
A crucial point for potential buyers is to verify exactly which radio they have, as models like the already have the UI-7's capabilities built-in. For all others on the list, the UI-7 is an essential upgrade to achieve full multi-mode operation.