Once powered back on, the AM and FM mode buttons on the front panel of the radio will now actively route signals through the newly installed UI-7 circuit. Finding a UI-7 Today: Tips for Buyers
The is an internal, optional plug-in board designed for older Icom HF transceivers. Its primary function is to enable AM transmission and FM transmission/reception capabilities that are otherwise disabled in the base radio. 📻 Core Purpose
There is no direct clone or third-party equivalent. The UI-7 uses a proprietary resistor ladder and pulse detection that third-party manufacturers never replicated.
| Category | Rating (1–5) | |----------|--------------| | Build quality | 4 | | Ease of installation | 3 | | FM audio quality | 2.5 (mono only) | | AM sensitivity | 4 | | AM selectivity | 2 | | Value for money | 2 | icom ui-7 am fm unit
Adds AM (transmit) and FM (transmit/receive) modes. Power Output (on IC-725): AM: ~40 watts. FM: ~100 watts. Origin: Manufactured in Japan. 🔌 Compatibility
Use the provided mounting screws to anchor the board if required by the chassis design. Replace the outer casing.
Enables full FM operation, including both transmission and reception, allowing operators to use 10-meter FM repeaters or direct FM contacts. Compatible Icom Radio Models Once powered back on, the AM and FM
The UI-7 can drive an external speaker (4–8 ohms) for higher audio output in noisy engine rooms or open cockpits. Furthermore, when connected to a compatible Icom transceiver, it supports a function, allowing the helmsman to use an external hailer horn.
: Because it was an optional add-on, it is now a sought-after accessory for vintage radio collectors. Used units often appear on sites like or through specialized shops like Radioworld UK Further Exploration Learn how to install the unit with this UI-7 Installation Tutorial from a community radio hobbyist. View the technical circuit specifications in the Icom IC-725 Service Manual Check current availability for this vintage component on installation guide for a specific radio model? RigPix Database - Accessories - Icom UI-7
The UI-7 is an internal hardware upgrade. It is a small circuit board that must be installed inside the transceiver's chassis. 📻 Core Purpose There is no direct clone
It connects via a multi-pin connector and is secured with screws.
If you have questions about the compatibility of your specific Icom model or need help navigating the installation of the unit, check out online forums or authorized vintage radio repair services. What is your experience with the Go to product viewer dialog for this item. on 10-meter FM? Let us know in the comments below! RigPix Database - Accessories - Icom UI-7