INSTRUCTION MANUAL i2720H DUAL BAND FM TRANSCEIVER This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FOREWORD Thank you for purchasing this Icom product. The IC-2720H VHF/UHF FM TRANSCEIVER is designed and built with Icom's superior technology and craftsmanship. With proper care, this product should provide you with years of trouble-free operation. We want to take a couple of moments of your time to thank you for making your IC-2720H your radio of choice, and hope you agree with Icom's philosophy of "technology first." Many hours of research and development went into the design of your IC-2720H. IMPORTANT READ ALL INSTRUCTIONS carefully and completely before using the transceiver. SAVE THIS INSTRUCTION MANUAL-- This instruction manual contains important operating instructions for the IC-2720H. EXPLICIT DEFINITIONS DEFINITION Personal injury, fire hazard or electric shock R WARNING! may occur. CAUTION NOTE Equipment damage may occur. Recommended for optimum use. No risk of personal injury, fire or electric shock. WORD D FEATURES V/V, U/U simultaneous receive capability Independent controls for each left and right bands Separate controller for flexible installation 50 W* of high transmit output power *VHF band; 35 W for UHF, 25 W for Taiwan version Remote control microphone standard New DMS (Dynamic Memory Scan) system i Icom, Icom Inc. and the logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries. PRECAUTION RWARNING RF EXPOSURE! This device emits Radio Frequency (RF) energy. Extreme caution should be observed when operating this device. If you have any questions regarding RF exposure and safety standards please refer to the Federal Communications Commission Office of Engineering and Technology's report on Evaluating Compliance with FCC Guidelines for Human Radio frequency Electromagnetic Fields (OET Bulletin 65). NEVER let objects impede the operation of the cooling fan on the rear panel. DO NOT push the PTT when not actually desiring to transmit. DO NOT allow children to play with any radio equipment containing a transmitter. During mobile operation, DO NOT operate the transceiver without running the vehicle's engine. When the transceiver's power is ON and your vehicle's engine is OFF, the vehicle's battery will soon become exhausted. RWARNING! NEVER connect the transceiver to an AC outlet. This may pose a fire hazard or result in an electric shock. RWARNING! NEVER operate the transceiver while driving a vehicle. Safe driving requires your full attention--anything less may result in an accident. NEVER connect the transceiver to a power source of more than 16 V DC. This will damage the transceiver. AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below ­10°C or above +60°C. BE CAREFUL! The transceiver will become hot when operating it continuously for long periods. NEVER connect the transceiver to a power source using reverse polarity. This will damage the transceiver. AVOID setting the transceiver in a place without adequate ventilation. Heat dissipation may be affected, and the transceiver may be damaged. NEVER cut the DC power cable between the DC plug and fuse holder. If an incorrect connection is made after cutting, the transceiver may be damaged. AVOID the use of chemical agents such as benzine or alcohol when cleaning, as they can damage the transceiver's surfaces. NEVER expose the transceiver to rain, snow or any liquids. The transceiver may be damaged. USE Icom microphones only (supplied or optional). Other manufacturer's microphones have different pin assignments and may damage the transceiver if attached. NEVER operate or touch the transceiver with wet hands. This may result in an electric shock or damage the transceiver. NEVER place the transceiver where normal operation of the vehicle may be hindered or where it could cause bodily injury. For U.S.A. only CAUTION: Changes or modifications to this device, not expressly approved by Icom Inc., could void your authority to operate this device under FCC regulations. ii SUPPLIED ACCESSORIES q w e r t y TABLE OF CONTENTS FOREWORD ........................................................................................... i IMPORTANT ............................................................................................ i EXPLICIT DEFINITIONS ......................................................................... i PRECAUTION ........................................................................................ ii SUPPLIED ACCESSORIES .................................................................. iii TABLE OF CONTENTS ......................................................................... iii QUICK REFERENCE GUIDE ........................................................... I­XII I Installation ....................................................................................... I I Your first contact ......................................................................... VIII I Repeater operation ........................................................................ X I Programming memory channels.................................................... XI 1 PANEL DESCRIPTION ............................................................... 1­10 I Front panel-- controller ................................................................. 1 I Function display ............................................................................. 3 I Main unit ........................................................................................ 5 I Microphone (HM-133) .................................................................... 7 I Microphone keypad ........................................................................ 8 I Optional microphones (HM-118N/TN/TAN)................................... 10 2 SETTING A FREQUENCY ........................................................ 11­15 I Preparation ................................................................................... 11 I Using the tuning dial .................................................................... 13 I Using the [Y]/[Z] keys ................................................................. 13 I Using the keypad ......................................................................... 13 I Tuning step selection ................................................................... 14 I Lock functions .............................................................................. 15 3 BASIC OPERATION ................................................................. 16­21 I Receiving ..................................................................................... 16 I Monitor function ........................................................................... 16 I Squelch attenuator ....................................................................... 17 I V/V, U/U simultaneous receive (Para-watch) ............................... 18 I Sub band mute/sub band busy beep ........................................... 19 I Transmitting ................................................................................. 20 u i o q DC power cable (3 m) .............................................1 w Mobile mounting bracket .......................................1 e Microphone (HM-133)* ..........................................1 r Fuse (20 A) .........................................................1 t Mounting screws, nuts and washers .....................1 set y Microphone hanger ................................................1 u Remote controller bracket (MB-84) ...........................1 i Mounting screws, nuts and washers for MB-84 ......1 set o Separation cable (3.5 m; 11.5 ft) ..............................1 *HM-118N HAND MICROPHONE or HM-118TN/TAN supplied versions are also available. A ferrite core is adapted for the USA version. DTMF MICROPHONE iii 4 5 6 7 8 I Selecting output power ................................................................ 20 I One-touch PTT function ............................................................... 21 I Audio mute function ..................................................................... 21 REPEATER OPERATION ......................................................... 22­28 I General ........................................................................................ 22 I Accessing a repeater ................................................................... 23 I Subaudible tones ......................................................................... 25 I Offset frequency .......................................................................... 27 I Auto repeater (USA version only) ................................................ 28 MEMORY OPERATION ............................................................ 29­37 I General description ...................................................................... 29 I Memory channel selection ........................................................... 29 I Programming a memory channel ................................................. 30 I Transferring memory contents ..................................................... 32 I Memory clearing .......................................................................... 34 I Memory bank selection ................................................................ 35 I Memory bank setting .................................................................... 36 I Transferring bank contents .......................................................... 37 CALL CHANNEL OPERATION ................................................ 38­39 I Call channel selection .................................................................. 38 I Call channel transferring .............................................................. 38 I Programming a call channel ........................................................ 39 SCAN OPERATION .................................................................. 40­45 I Scan types ................................................................................... 40 I Scan start/stop ............................................................................. 41 I Scan edges programming ............................................................ 42 I Skip channel setting ..................................................................... 44 I Scan resume condition ................................................................ 45 PRIORITY WATCH .................................................................... 46­47 I Priority watch types ...................................................................... 46 I Priority watch operation ............................................................... 47 9 DTMF MEMORY ENCODER ..................................................... 48­51 I Programming a DTMF code ......................................................... 48 I Transmitting a DTMF code .......................................................... 50 I DTMF speed ................................................................................ 51 10 POCKET BEEP AND TONE SQUELCH ................................... 52­55 I Pocket beep operation ................................................................. 52 I Tone/DTCS squelch operation ..................................................... 54 I Tone scan ..................................................................................... 55 11 OTHER FUNCTIONS ................................................................ 56­72 I Set mode ...................................................................................... 56 I Initial set mode ............................................................................. 60 I AM/FM narrow mode ................................................................... 64 I Weather channel operation (USA version only) ........................... 65 I Microphone keys .......................................................................... 66 I Partial reset .................................................................................. 67 I All reset ........................................................................................ 67 I Data cloning ................................................................................. 68 I Packet operation .......................................................................... 69 12 MAINTENANCE ........................................................................ 73­74 I Troubleshooting ........................................................................... 73 I Fuse r ...