IC-A4#02IM 01.12.5 5:04 PM Page a (1,1) INSTRUCTION MANUAL VHF AIR BAND TRANSCEIVER iA4 This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference.
IC-A4#02IM 01.12.5 5:04 PM Page b (1,1) FOREWORD CAUTIONS READ ALL INSTRUCTIONS carefully and completely R WARNING! NEVER hold the transceiver so that the before using the transceiver. antenna is very close to, or touching exposed parts of the body, especially the face or eyes, while transmitting. The transceiver will perform best if the microphone is 5 to 10 cm away from the lips and the transceiver is vertical.
IC-A4#02IM 01.12.5 5:04 PM Page c (1,1) SUPPLIED ACCESSORIES DO NOT push the PTT when not actually desiring to transmit. DO NOT operate the transceiver near unshielded electrical blasting caps or in an explosive atmosphere. AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below –10°C or above +60°C. Place unit in a secure place to avoid inadvertent use by children.
IC-A4#02IM 01.12.5 5:04 PM Page d (1,1) TABLE OF CONTENTS FOREWORD ........................................................................ i EXPLICIT DEFINITIONS ..................................................... i CAUTIONS .......................................................................... i SUPPLIED ACCESSORIES................................................. ii TABLE OF CONTENTS ...................................................... iii 1 ACCESSORY ATTACHMENT .................................
IC-A4#02IM 01.12.5 5:04 PM Page 1 (1,1) ACCESSORY ATTACHMENT D Antenna CAUTION: Transmitting without an antenna may damage the transceiver. Insert the supplied antenna into the antenna connector and screw down the antenna as shown at right. 1 D Belt clip Conveniently attaches to your belt. To attach: Slide the belt clip into the plastic loop on the back of the battery case/pack. Keep the jack cover attached when jacks are not in use to avoid bad contacts from dust and moisture.
IC-A4#02IM 01.12.5 5:04 PM Page 2 (1,1) 2 PANEL DESCRIPTION ■ Panel description q VOLUME CONTROLS [VOL] (p. 5) Turns power ON and adjusts the audio level. w PTT SWITCH [PTT] (p. 5) Push and hold to transmit; release to receive. q !4 !3 w !2 !1 e !0 o r t y 2 i u e CHANNEL UP/DOWN SWITCHES [Y]/[Z] ➥ Push to select the operating channel or frequency. (p. 5) ➥ Select item conditions in set mode. r LOCK SWITCH [ ] ➥ Push and hold 2 sec. to toggle the key lock function ON or OFF. (p.
IC-A4#02IM 01.12.5 5:04 PM Page 3 (1,1) PANEL DESCRIPTION VFO mode: VFO scan function. (option) MEMORY mode: Memory channel scan function. (p. 10) ➥When memory mode is selected, this switch sets the displayed channel as a scan lock-out channel when pushed for 2 sec. (option) • “SKIP” appears on the display. i SQUELCH SWITCH [SQL] ➥ Push and hold to open the squelch. (p. 6) ➥ While pushing [SQL], push [Y]/[Z] to select the squelch level. (p. 6) • 9 squelch levels and squelch open are available.
IC-A4#02IM 01.12.5 5:04 PM Page 4 (1,1) 2 PANEL DESCRIPTION ■ Function display MR SKIP q MEMORY MODE INDICATOR (p. 9) Appears when memory mode is selected. w LOCK INDICATOR (p. 6) Indicates that the lock function is in use. e LOW BATTERY INDICATOR ➥ Appears when the battery is nearing exhaustion. ➥ Appears and flashes when battery replacement is necessary. r FREQUENCY DISPLAY (p. 11) ➥Shows the operating frequency. ➥Shows the channel name when the memory name function is selected. (p.
IC-A4#02IM 01.12.5 5:04 PM Page 5 (1,1) BASIC OPERATION ■ Receiving and transmitting CAUTION: Transmitting without an antenna may dam- 3 w Push [V/M] key for 2 sec. to transfer the memory contents to VFO. • VFO mode is selected. age the transceiver. q Rotate [VOL] clockwise to turn power ON, then set to the 10 o’clock position. w Push [V/M]* to select memory mode (or VFO mode: *option). e Select the desired memory channel (or VFO frequency) with the [Y]/[Z] keys.
IC-A4#02IM 01.12.5 5:04 PM Page 6 (1,1) 3 BASIC OPERATION ■ Setting squelch level ■ Lock function The transceiver has a noise squelch circuit to mute undesired noise while receiving no signal. The lock function prevents accidental channel changes and accidental function access. [PTT] and [SQL] still function while the lock function is in use. ➥ To open the squelch: Push and hold [SQL] to open the squelch. This is useful to listen to weak signals that do not open the squelch.
IC-A4#02IM 01.12.5 5:04 PM Page 7 (1,1) BASIC OPERATION 3 ■ Dial select function Use the dial select function to adjust the tuning behavior of the [Y]/[Z] keys—use 1 MHz tuning when you want to change the frequency in large increments; use regular tuning when you want to change the frequency in smaller increments. q Push [V/M] to select VFO mode. w Push [V/M] for 2 sec. one or more times to select the desired tuning increment. • 1 MHz tuning, 100 kHz tuning or regular tuning steps can be selected.
IC-A4#02IM 01.12.5 5:04 PM Page 8 (1,1) 4 SCAN OPERATION ■ Memory (lockout) scan ■ VFO (full) scan Memory scan repeatedly scans all programmed memory channels, except those set as lockout channels. VFO scan repeatedly scans between the VFO’s lowest frequency and its highest frequency. • To change the scan direction, push [Y] or [Z] during scanning. q Push [V/M] to select memory mode, if necessary. • “ MR ” appears. D Scan resume condition w Puch [SCAN] to start scan.
IC-A4#02IM 01.12.5 5:04 PM Page 9 (1,1) MEMORY PROGRAMMING 5 ■ Programming a memory channel The transceiver has 19 memory channels for storage of often -used frequencies. q Push [V/M] to select VFO mode, if necessary. w Push [Y] or [Z] to select the desired frequency. • “ MR ” appears. w Push [Y] or [Z] to select a memory channel to set as a lockout channel. e Push [SCAN] for 2 sec. to toggle the lockout setting ON/OFF. MR • “ MR ” and memory channel number appear.
IC-A4#02IM 01.12.5 5:04 PM Page 10 (1,1) 5 MEMORY PROGRAMMING ■ Memory names ï Programming memory names q Select the memory channel to be programmed: ➥ Push [V/M] to select memory mode. ➥ Push [Y] or [Z] to select the memory channel. w Push [M/W] for 5 sec. to enter memory name writing mode. • The following characters can be used in names: ➥ 0 to 9, A to Z (capitals), (space), “-”, #, $, &, (, ), “,”, •, /, <, >, =, “, ‘, ?, ! and @. • The first character of the name flashes.
IC-A4#02IM 01.12.5 5:04 PM Page 11 (1,1) OTHER FUNCTIONS ■ Initial set mode Initial set mode is accessed at power ON and allows you to set seldom-changed settings. In this way you can “customize” transceiver operations to suit your preferences and operating style. 6 D Beep tones ON/OFF Confirmation beep tones normally sound when you push a key. These can be turned ON or OFF as you prefer. D Entering initial set mode q While pushing [V/M] + [ ], turn power ON.
IC-A4#02IM 01.12.5 5:04 PM Page 12 (1,1) 7 BATTERY PACKS ■ Charging precautions ■ Battery pack charging NEVER attempt to charge dry cell batteries. This will cause internal liquid leakage and damage the battery case and transceiver. The BP-195 or BP-196 BATTERY PACK includes rechargeable Ni-Cd batteries and can be charged approx. 300 times. Charge the battery pack before first operating the transceiver or when the battery pack becomes exhausted. NEVER connect two or more chargers at the same time.
IC-A4#02IM 01.12.5 5:04 PM Page 13 (1,1) BATTERY PACKS 7 D Multiple charging with the BC-121 D Regular charging The optional BC-121 allows up to 6 battery packs to be charged simultaneously. q Attach the battery pack to the transceiver. w Be sure to turn the transceiver power OFF. e Connect the AC adapter (BC-110A/D/V) or optional cable (CP-12L or OPC-254L) as shown below. Six AD-81’s and an AC adapter (may be supplied with the BC-121 depending on version) are additionally required.
IC-A4#02IM 01.12.5 5:04 PM Page 14 (1,1) 7 BATTERY PACKS ■ About the battery pack D Operating period Depending on the attached battery pack, the operating period of the transceiver varies. Refer to OPTIONS for battery pack specifications. D Battery pack life If your battery pack seems to have no capacity even after being fully charged, completely discharge it by leaving the power ON overnight. Then, fully charge the battery pack again.
IC-A4#02IM 01.12.5 5:04 PM Page 15 (1,1) CLONING ] Cloning allows you to quickly and easyly transfer the programmed contents from one transceiver to another transceiver, or, data from PC to a transceiver using the optional EX-2119 cloning software. D Transceiver to transceiver cloning q Connect the OPC-474 CLONING CABLE with adapter plugs to the [SP] jack of the master and slave transceivers. • The master transceiver is used to send data to the slave transceiver.
IC-A4#02IM 01.12.5 5:04 PM Page 16 (1,1) 9 TROUBLESHOOTING If your transceiver seems to be malfunctioning, please check the following points before sending it to a service center. PROBLEM 16 POSSIBLE CAUSE SOLUTION REF. No power comes on. • The battery is exhausted. • Bad connection to the battery pack. • Recharge the battery pack. • Check the connection to the transceiver. pgs. 12, 14 No sound comes from the speaker. • Squelch level is too deep. • Volume level is too low.
IC-A4#02IM 01.12.5 5:04 PM Page 17 (1,1) SPECIFICATIONS D General D Transmitter • Frequency coverage • Output power : Tx 118 to 136.975 MHz Rx 108 to 136.975 MHz • Mode : AM (6K00A3E) • Number of memory channels : 19 • Acceptable power supply : 9.6 V DC nominal (negative ground) (authorized battery packs) • Usable temp. range : –10˚C to +50˚C • Frequency stability : ±10 ppm (0˚C to +50˚C) • Current drain : Tx 1.2 A (CW) max. 0.7 A (CW) typical Rx 55 mA typical (at standby) 250 mA max. (at AF max.
IC-A4#02IM 01.12.5 5:04 PM Page 18 (1,1) 11 OPTIONS D Battery packs Charging period Battery Voltage Capacity pack Wall charger Battery case for AA BP-194 (R6) × 8 alkaline or 10 hrs*2 Ni-Cd cells BC-119 or BC-121 with AD-81 Operating period*1 N/A 6 hrs*2 BP-195 9.6 V 700 mAh 10 hrs 1.5 hrs 6 hrs BP-196 9.6 V 1050 mAh 15 hrs 2.0 hrs 9.
IC-A4#02IM 01.12.5 5:04 PM Page 19 (1,1) OPTIONS 11 D OPC-752 (HEADSET ADAPTER) connection When using an optional headset, such as those from the David Clark Co. via the adapter, the transceiver outputs your transmitted voice to the headset for monitoring. (pgs. 6, 11) OPC-752 PTT PTT switch Use a PTT switch with a 3.5 mm diameter plug, if required. IC-A4 Clip the cable to the handstrap loop on the beltclip for support. HEADSET (Must be purchased separately.
IC-A4#02IM 01.12.5 5:04 PM Page 20 (1,1) Count on us! A-5523H-1EX Printed in Japan © 1998 Icom Inc.
