Remote Tuner Command for Icom IC7700 and IC7800

This article provides a solution for Icom IC7700 and IC7800 users who need to control remote tuners like the MFJ 998RT. The author describes the lack of a built-in remote tuner call command in these transceivers, which complicates the tuning process. The document outlines the creation of an Arduino-based interface that allows users to initiate the remote tuner adjustment with a simple command. The setup requires a low power transmit signal of approximately 15 watts for the autotuner to function correctly. The resource includes technical details about the antenna configuration, including a 55-foot vertical antenna and a switchable loading coil for 160M operation, making it relevant for operators working across multiple bands.