iIMPORTANTREAD ALL INSTRUCTIONS carefully and com-pletely before using the transceiver.SAVE THIS INSTRUCTION MANUAL — Thisinstruction manual contains important operating instructionsfor the IC-F3230DT, IC-F3230DS VHF DIGITAL TRANS-CEIVERS and the IC-F4230DT, IC-F4230DS UHF DIGITALTRANSCEIVERS.See the operating guide for details of IDAS (ICOM DigitalAdvanced System) system operations. Ask your dealer fordetails.EXPLICIT DEFINITIONSWORD DEFINITIONRDANGER! Personal death, serious injury or an ex-plosion may occur.RWARNING! Personal injury, fire hazard or electricshock may occur.CAUTION Equipment damage may occur.NOTE If disregarded, inconvenience only. No riskof personal injury, fire or electric shock.VOICE CODING TECHNOLOGYThe AMBE+2™ voice coding Technology embodied in thisproduct is protected by intellectual property rights includingpatent rights, copyrights and trade secrets of Digital VoiceSystems, Inc. This voice coding Technology is licensed solelyfor use within this Communications Equipment. The user ofthis Technology is explicitly prohibited from attempting to ex-tract, remove, decompile, reverse engineer, or disassemblethe Object Code, or in any other way convert the Object Codeinto a human-readable form. U.S. Patent Nos.#5,870,405, #5,826,222, #5,754,974, #5,701,390, #5,715,365,#5,649,050, #5,630,011, #5,581,656, #5,517,511, #5,491,772,#5,247,579, #5,226,084 and #5,195,166.Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incor-porated (Japan) in Japan, the United States, the United Kingdom, Germany,France, Spain, Russia, Australia, New Zealand, and/or other countries.