: Adds full Frequency Modulation (FM) support, allowing for transmission at up to 100 watts and clear reception.
From repair and parts lists:
The is a testament to Icom’s philosophy that every component on a bridge should be built for the sea. It lacks the flashy LEDs of a consumer stereo, but it offers something far more valuable on the water: Reliability under pressure. icom ui7 am fm unit
The is an optional add-on board designed to provide AM and FM transmit and receive capabilities to specific older Icom HF transceivers, most notably the IC-725 , IC-726 , IC-728 , and IC-729 .
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an optional plug-in circuit board designed to add AM and FM capabilities to the Icom IC-725 HF transceiver
(Invoking related search terms for further exploration.) : Adds full Frequency Modulation (FM) support, allowing
Intrigued, Elias tuned to the stored frequency: 1.607 MHz, the very bottom of the AM band. It was a wasteland frequency, used by taxi dispatchers in the 70s and nothing else. But through the static, he heard it: a low, rhythmic thrumming. Not an engine. Not a generator. It sounded like a giant sleeping animal breathing into a microphone.