iIMPORTANTREAD ALL INSTRUCTIONS carefully and com-pletely before using the transceiver.SAVE THIS INSTRUCTION MANUAL — Thisinstruction manual contains important operating instruc-tions for the IC-F5121D, IC-F5123D, IC-F5128D VHF MO-BILE TRANSCEIVERS and the IC-F6121D, IC-F6123D, IC-F6128D UHF MOBILE TRANSCEIVERS.EXPLICIT DEFINITIONSWORD DEFINITIONR WARNING! 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.FCC INFORMATION• FOR CLASS B UNINTENTIONAL RADIATORS:This equipment has been tested and found to comply withthe limits for a Class B digital device, pursuant to part 15 ofthe FCC Rules. These limits are designed to provide reason-able protection against harmful interference in a residentialinstallation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in ac-cordance with the instructions, may cause harmful interfer-ence to radio communications. However, there is no guaran-tee that interference will not occur in a particular installation.If this equipment does cause harmful interference to radio ortelevision reception, which can be determined by turning theequipment off and on, the user is encouraged to try to correctthe interference by one or more of the following measures:• Reorient or relocate the receiving antenna.• Increase the separation between the equipment and re-ceiver.• Connect the equipment into an outlet on a circuit differ-ent from that to which the receiver is connected.• Consult the dealer or an experienced radio/TV technicianfor help.Icom, Icom Inc. and the Icom logo are registered trademarks of IcomIncorporated (Japan) in Japan, the United States, the United King-dom, Germany, France, Spain, Russia and/or other countries.All other products or brands are registered trademarks or trademarksof their respective holders.CAUTION: Changes or modifications to this transceiver,not expressly approved by Icom Inc., could void your au-thority to operate this transceiver under FCC regulations.