"RS-SAT100" is a text chat application for ICOM "IC-SAT100" and "IC-SAT100M" satellite communication transceivers. It provides a text chat function through a satellite communication network by connecting to a transceiver using Bluetooth. Device requirements: - Android 7.0 or later - The Bluetooth function Supported transceivers: Icom IC-SAT100 and IC-SAT100M Refer to the instruction manual for details. NOTE: The RS-SAT100 is not guaranteed to work on all Android devices. It may not work, depending on the version of the OS or the apps installed on your device. The RS-SAT100 connects to the transceiver using Bluetooth. It may not correctly operate, depending on the radio wave environment of Bluetooth. Bluetooth may disconnect in the following cases: · The screen of the device is locked. · This application is running in the background mode. · Wi-Fi is enabled. · When connecting or disconnecting a Bluetooth headset.