Icom Ui-7 Am Fm Unit Link Jun 2026

The Icom UI-7 AM/FM unit is a highly integrated and versatile module that offers a range of features and capabilities for amateur radio communication. Its compact size, low power consumption, and high performance make it an attractive solution for manufacturers and hobbyists looking to build or upgrade their amateur radio equipment. Whether you're building a handheld radio, mobile radio, or repeater system, the Icom UI-7 is definitely worth considering.

| Mode | Transmit Power (UI-7 Installed) | |------|-------------------------------| | AM | 10-40W (IC-725/728) / 1-4W (IC-721S) | | FM | 10-100W (IC-725/728) / 1-10W (IC-721S) | | SSB | 10-100W (IC-725/728) | | CW | 10-100W (IC-725/728) |

Two cable bundles link the unit directly to the board's internal headers (J21 and J22). icom ui-7 am fm unit

Allows the radio to transmit in AM mode, typically at a reduced power of 10–40 watts. Enables FM Transmit/Receive:

This is critical. The VHF antenna on your mast is NOT used for AM/FM broadcast. The UI-7 requires a dedicated AM/FM antenna (typically an 8-foot whip or a powered marine antenna) connected to the "ANT" jack on the back of the main transceiver (M605/M400BB). If you skip this, the AM/FM tuner will receive nothing but static. The Icom UI-7 AM/FM unit is a highly

A compact 100W HF transceiver designed for CW/SSB, which gains AM and FM capabilities with the installation of this unit.

Ensure the internal cables interacting with the main control board are not damaged. Check the service manual to adjust the internal FM squelch threshold trimmer potentiometer if necessary. Conclusion | Mode | Transmit Power (UI-7 Installed) |

It was designed specifically for entry-level HF transceivers to add missing operational modes without increasing the base cost for operators who did not need them. 📻 Why It Was Needed