- DL manuals
- Icom
- Transceiver
- IC-A4
- Instruction Manual
Icom IC-A4 Instruction Manual
Summary of IC-A4
Page 1
Ia4 vhf air band transceiver instruction manual 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#01 im 01.12.5 5:14 pm page a (1,1).
Page 2
I foreword read all instructions carefully and completely before using the transceiver. Save this instruction manual — this in- struction manual contains important operating instructions for the ic-a4. Explicit definitions the explicit definitions below apply to this instruction manual. Cautions r w...
Page 3
Ii do not push the ptt when not actually desiring to trans- mit. Do not allow children to play with any radio equipment containing a transmitter. Do not operate the transceiver near unshielded electrical blasting caps or in an explosive atmosphere. Avoid using or placing the transceiver in direct su...
Page 4
Foreword ........................................................................ I explicit definitions ..................................................... I cautions .......................................................................... I supplied accessories....................................
Page 5: Accessory Attachment
1 1 accessory attachment d antenna caution: transmitting without an antenna may damage the transceiver. Insert the supplied antenna into the an- tenna connector and screw down the an- tenna as shown at right. Keep the jack cover attached when jacks are not in use to avoid bad contacts from dust and ...
Page 6: 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. E channel up/down switches [ y ]/[ z ] ➥ push to select the operating channel or frequency. (p. 5) ➥ select item conditions in set m...
Page 7
3 2 panel description ➥ when memory mode is selected, this switch sets the dis- played channel as a scan lock-out channel when pushed for 2 sec. (p. 8) - “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 selec...
Page 8: Function Display
4 2 panel description ■ function display 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 i...
Page 9: Basic Operation
5 3 basic operation ■ receiving and transmitting caution: transmitting without an antenna may dam- 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. E select the desired memory channel or vfo frequency...
Page 10: Setting Squelch Level
6 3 basic operation ■ setting squelch level the transceiver has a noise squelch circuit to mute undesired noise while receiving no signal. ➥ 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. - “ busy ” appears on the ...
Page 11: Dial Select Function
7 3 basic operation ■ 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 incre- ments. Q push [v/m] to ...
Page 12: Scan Operation
8 4 scan operation ■ memory (lockout) scan memory scan repeatedly scans all programmed memory channels, except those set as lockout channels. Q push [v/m] to select memory mode, if necessary. • “ ” appears. W puch [scan] to start scan. - to change the scan direction, push [ y ] or [ z ]. E push [sca...
Page 13: Memory Programming
9 5 memory programming ■ 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 ] key to select the desired frequency. • push [v/m] key one or more times to use the dial select fun...
Page 14: Memory Names
10 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 first character of the name flashes...
Page 15: Other Functions
11 6 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. D entering initial set mode q while pushing [v/m] + [ ], turn power on....
Page 16: Charging
■ charging precautions never attempt to charge dry cell bat- teries. This will cause internal liquid leakage and damage the battery case and transceiver. Never connect two or more chargers at the same time. Charging may not occur under temper- atures of 10°c (50°f) or over tempera- tures of 40°c (10...
Page 17
13 7 battery packs d multiple charging with the bc-121 the optional bc-121 allows up to 6 battery packs to be charged simultaneously. Six ad-81’s and an ac adapter (may be supplied with the bc-121 depending on version) are additionally required. • charging periods: 1.5 hours (w/bp-195) 2 hours (w/bp...
Page 18: About The Battery Pack
14 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 the last page for battery pack specifications. D battery pack life if your battery pack seems to have no capacity even after being fully cha...
Page 19: Cloning
Cloning 15 8 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 plu...
Page 20: Troubleshooting
16 9 troubleshooting if your transceiver seems to be malfunctioning, please check the following points before sending it to a service center. Possible cause solution ref. No power comes on. • the battery is exhausted. • bad connection to the battery pack. • recharge the battery pack. • check the con...
Page 21: Specifications
17 10 specifications d general • frequency coverage : 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 stabili...
Page 22: Options
18 11 options d battery packs 1 operating periods are calibrated for the following conditions: at 25°c (77°f), tx (high power) : rx : standby = 5 : 5 : 90 * 2 when ni-cd batteries are installed. D other options bc-110a/d/v wall charger used for regular charging of the connected battery pack. Bc-119 ...
Page 23
Options 19 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) ptt switch use a ptt switch with a 3.5 mm diame- ter plug, if requ...
Page 24
Count on us! 6-9-16 kamihigashi, hirano-ku, osaka 547 japan a-5490h-1us printed in japan copyright 1997 icom inc. Ic-a4#01 im 01.12.5 5:38 pm page 21 (1,1).