Icom Ui7 Am Fm Unit -

The Icom UI-7 is an optional internal expansion board designed to add FM transmit/receive and AM transmit capabilities to specific Icom HF transceivers. It is most commonly used to upgrade the Icom IC-725 and IC-728 radios. Key Functions

FM Support: Adds both transmission and reception for the FM mode.

AM Support: Enables AM transmission (reception is typically already native to the radio).

Plug-in Design: Simple internal installation without requiring complex modifications. Compatible Radios Icom IC-725 Go to product viewer dialog for this item. : Requires the UI-7 to use FM on 10-meter repeaters. Icom IC-728 : Specifically listed as a compatible "plug-in" upgrade. Icom IC-729

: Not needed for this model, as FM/AM features are built-in. Installation & Use 💡 Quick Tip : Many users look for the to access 10-meter FM repeaters during high solar activity. icom ui7 am fm unit

Check Installation: You can verify if a UI-7 is installed in an

by checking the mode button; if the unit is missing, selecting FM will usually result in no audio or transmission.

Availability: As it is a discontinued legacy part, it is primarily found through second-hand markets like eBay or QRZ Forums. Jay's Technical Talk | My external memory

Report: ICOM UI-7 AM/FM Receiver Unit

Subject: Technical Overview and Status of the ICOM UI-7 AM/FM Unit Date: October 26, 2023 Prepared For: Technical Research / Radio Equipment Maintenance

1. Introduction

The Icom UI-7 is a dedicated AM/FM receiver unit designed for select Icom marine and land mobile radio systems. It adds broadcast radio reception capabilities to compatible Icom transceivers or control heads, allowing users to monitor AM (MW) and FM (VHF broadcast band) while maintaining primary communication functions.

Why Choose the UI7 Over a Standard Car Stereo?

If you search for "AM FM unit" online, you will find hundreds of cheap automotive options. So, why pay a premium for the Icom UI7? The answer lies in three distinct marine realities:

Installation Guide: Mounting the Icom UI7

Proper installation is critical. You do not want to put the UI7 in the same compartment as your auto-pilot computer or radar encoder, as RF interference can degrade AM reception. The Icom UI-7 is an optional internal expansion

2. Key Specifications (Typical)

| Parameter | Details | |-----------|---------| | Frequency range (FM) | 76 – 108 MHz (varies by region; typically 87.5–108 MHz) | | Frequency range (AM) | 522 – 1629 kHz (or 530–1710 kHz for US market) | | Power supply | Supplied via connected Icom unit (e.g., 13.8 V DC) | | Audio output | Routes through external speaker / control head | | Antenna connection | Separate AM/FM antenna port (often via BNC or SMA) | | Interface | Data/control via Icom proprietary cable (e.g., OPC-xxx) | | Compatible with | Icom IC-M400BB, IC-M510, IC-M605, select land mobile consoles |

1. Executive Summary

The ICOM UI-7 is an optional internal receiving unit designed to add AM and FM broadcast band reception capabilities to specific ICOM amateur radio transceivers. While ICOM HF transceivers are primarily designed for amateur bands (160m–10m), the UI-7 allows operators to listen to commercial AM radio and FM broadcast stations. This report details the unit's function, compatible hardware, installation, and current availability.

Where to Buy and Pricing

As of this writing, the Icom UI7 is a specialty item. It is not stocked at big-box automotive stores. You can find it at:

  1. Marine Electronics Retailers: Defender, West Marine, Hodges Marine.
  2. Icom Authorized Dealers: These offer a 2-year waterproof warranty.
  3. Secondary Market: eBay (Be careful with "parts only" listings; the UI7 is difficult to repair).

Expected Price: $180 to $250 USD (Main unit only; does not include antenna or speakers). Where to Buy and Pricing As of this

3. Where to Find This Paper

Since Icom does not publicly host most service manuals, try:

  • Icom America / Icom Japan support – Request service documentation for IC-M506 or UI-7.
  • Manualslib.com / Elektrotanya.com – Search “Icom UI-7” or “IC-M506 service manual”.
  • Radio repair forums (e.g., Repeater-Builder, Transmission1) – Users often share scanned Icom service manual sections.

Search string example:
"UI-7" "AM FM" Icom service manual filetype:pdf