Often used in conjunction with tone units (like the UT-30) to allow the radio to operate through FM repeaters, typically on the 10-meter band. Compatible Models
| Parameter | Details | |-----------|---------| | | 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 | icom ui7 am fm unit
: The board plugs into a specific slot on the bottom of the IC-725 chassis. Connections Often used in conjunction with tone units (like
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The is an optional internal plug-in board designed for specific legacy Icom HF transceivers. Its primary purpose is to expand the functional capabilities of the radio by adding modes that were not standard on the base models. Core Functionality AM Mode: Enables the radio to transmit in AM.