Icom IC-A4 User Manual Download

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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)

Summary of Contents for IC-A4

Page 1: ... 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 01 12 5 5 14 PM Page a 1 1 ...

Page 2: ...inue use NEVER connect the transceiver to an AC outlet or to a power source of more than 16 V DC Such a connection will damage the transceiver NEVER connect the transceiver to a power source that is DC fused at more than 5 A Accidental reverse connection will be protected by this fuse higher fuse values will not give any protection against such accidents and the transceiver will be ruined NEVER at...

Page 3: ...invalidate the warranty when the transceiver power is OFF a slight current still in the circuits Remove the battery pack or case from ansceiver when not using it for a long time Otherwise ttery pack or installed dry cell batteries will become ex ed SUPPLIED ACCESSORIES Accessories included with the transceiver Qty q Antenna 1 w Belt clip 1 e Handstrap 1 r Battery pack or battery case with Ni Cd ba...

Page 4: ...ghting 6 Low battery indicator 6 Dial select function 7 SCAN OPERATION 8 Memory lockout scan 8 VFO full scan 8 MEMORY PROGRAMMING 9 10 Programming a memory channel 9 Memory names 10 6 OTHER FUNCTIONS 11 Initial set mode 11 Resettng the CPU 11 7 BATTERY PACKS 12 14 Charging precautions 12 Battery pack charging 12 About the battery pack 14 Installing batteries in the battery case 14 8 CLONING 15 9 T...

Page 5: ...ment move and hold the bat elease downwards ull the battery pack rds as shown at ach the notched ends of the battery pack and the trans and push the battery pack until it clicks into place DBelt clip Conveniently attaches to your belt To attach Slide the belt clip into the plastic loop on the back of the bat tery case pack To remove Push the top of the belt clip towards the transceiver and at the ...

Page 6: ...toggle the key lock function ON or OFF p 6 appears on the display t VFO MEMORY SWITCH V M Push to select VFO mode or memory mode pgs 5 8 X appears when memory mode is selected The transceiver has 19 memory channels y MEMORY WRITE SWITCH MW Push and hold for 5 sec to write information into mem ory channels p 9 u SCAN SWITCH SCAN Starts and stops the scan function VFO mode VFO scan function MEMORY m...

Page 7: ... source using the optional bles CP 12L or OPC 254L to charge the attached bat y pack or connect the BC 110V wall charger for charg CAUTION This connection is for charging ONLY Power to the transceiver must be turned OFF during charging EAKER MICROPHONE 3 EXTERNAL SPEAKER AND MICROPHONE JACKS SP MIC Connect an optional speaker microphone or headset if desired The internal microphone and speaker wil...

Page 8: ...nel name when the memory name func tion is selected p 10 t BUSY INDICATORS BUSY appears when receiving a signal or when the squelch is open y MEMORY LOCKOUT INDICATOR SKIP appears when the memory channel is set as lockout channel u MEMORY CHANNEL INDICATOR Shows the memory channel number When the transceiver output power increases above a specified level a protection circuit stops the transmitting...

Page 9: ...r 100 kHz or 1 MHz p 7 sh and hold PTT to transmit then speak into the mi phone ansmit indicator lights ease PTT to receive emory VFO ory channel contents can be moved to VFO ect memory channel to be transferred Push V M to select memory mode if necessary Push Y or Z to select the memory channel wPush V M key for 2 sec to transfer the memory contents to VFO VFO mode is selected NOTE Only frequency...

Page 10: ...d off Release SQL to return to regular operation Side tone function hen using an optional headset such as those from the avid Clark Co via the OPC 752 HEAD SET ADAPTOR the ansceiver outputs your transmitted voice to the headset for onitoring p 18 Lock function The lock function prevents accidental channel changes and accidental function access PTT and SQL still function while the lock function is ...

Page 11: ... M to select VFO de sh V M for 2 sec one or re times to select the de d tuning increment MHz tuning 100 kHz tun g or regular tuning steps an be selected see dia ams at right sh any key to return to nor operation E Large tuning steps should be used only when you o change the frequency in large increments please se gular tuning steps for normal operation 1 MHz tuning selected 100 kHz tuning selected...

Page 12: ...ORY LOCKOUT SKIP SCAN SKIP SKIP Mch 1 Mch 7 Mch 2 Mch 4 Mch 3 Mch 5 Mch 6 Mch 8 Mch 19 Mch 11 Mch 10 Mch 9 VFO Full scan 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 DScan resume condition When a signal is received during scanning the scan pauses on the signal until it disappears then resumes VFO SCA...

Page 13: ...r 2 sec to pro m the information into the annel and return to VFO de MR MR MR DSetting lockout channels In order to speed up the scan interval you can set memory channels you don t wish to scan as lockout channels qPush V M to select memory mode if necessary appears wPush Y or Z to select a memory channel to set as a lockout channel ePush SCAN for 2 sec to toggle the lockout setting ON OFF SKIP ap...

Page 14: ...To erase a character overwritet with a space displayed as _ To move the cursor forwards or backwards use Y or Z Push for 2 sec to erase all characters Push M W to input the set name Flashing stops Memory channels can be programmed with names of up to 5 characters in length When no name is programmed the display shows the operating frequency The following characters can be used in names 0 to 9 A to...

Page 15: ...u to display a ory name instead of fre y n a memory channel has been programmed with a e frequency indication ap s instead DBeep tones ON OFF Confirmation beep tones nor mally sound when you push a key These can be turned ON or OFF as you prefer DSide tones ON OFF When using an optional headset such as those from the David Clark Co via the adapter the transceiver outputs your trans mitted voice to...

Page 16: ...rge the battery pack before first op erating the transceiver or when the bat tery pack becomes exhausted If you want to be able to charge the bat tery pack more than 300 times the fol lowing points should be observed 1 Avoid overcharging The charging pe riod should be less than 48 hours 2 Use the battery until it becomes al most completely exhausted under normal conditions We recommend battery cha...

Page 17: ...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 Charging periods 10 hours w BP 195 15 hours w BP 196 IC A4 with attached battery case pack BC 110A D V CP 12L optional OPC 254L optional To a 12 to 16 V DC power source To CHARGE white black MULTI CHARGER C adapter not supplied wit...

Page 18: ...ate and local laws it may be illegal to dispose of this battery into the municipal waste stream Call 1 800 8 BATTERY for attery recycling options in your area or contact your dealer Installing batteries in the battery case When using a battery case install 8 AA R6 size Ni Cd or al kaline batteries as illustrated below q Remove the bat tery case from the transceiver w Install 8 AA R6 size Ni Cd or ...

Page 19: ...condition sh PTT on the master nsceiver CLoUt appears in the mas r transceiver s display CL in appears automati ally in the slave trans eiver s display en cloning is finished turn wer OFF then ON again to cloning mode DCloning using PC Data can be cloned to and from a PC IBM compatible using the optional EX 2119 CLONING SOFTWARE and the optional OPC 478 CLONING CABLE Consult the EX 2119 CLONING SO...

Page 20: ... Volume level is too low Set squelch to the threshold point Set VOL to a suitable level pgs 5 6 ransmitting impossible Some channels are receive only The battery is exhausted Change channels Recharge the battery pack p 5 p 12 he displayed channel annot be selected Lock function is activated Push for 2 sec to cancel the function p 6 can does not start All memory channels are programmed as lockout c...

Page 21: ...typical Modulation Low level modulation Modulation limiting 80 to 100 Audio harmonic distortion Less than 10 at 60 modulation Hum and noise ratio More than 35 dB Spurious emissions More than 60 dB DReceiver Receive system Double conversion superheterodyne Intermediate frequencies 1st 28 95 MHz 2nd 450 kHz Sensitivity with 50 Ω load 1 µV at AM 6dB S N Squelch sensitivity 1 µV with 50 Ω load Selecti...

Page 22: ...d HM 119 SPEAKER MICROPHONE Combination speaker and microphone SP 13 EARPHONE Provides clear audio in noisy environments OPC 752 HEADSET ADAPTER 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 p 19 EX 2119 FIELD PROGRAMMING SOFTWARE Provides quick and easy programming of items includin...

Page 23: ... the adapter the transceiver outputs your mitted voice to the headset for monitoring pgs 6 11 PTT switch Use a PTT switch with a 3 5 mm diame ter plug if required HEADSET Must be purchased separately Clip the cable to the handstrap loop on the beltclip for sup port OPC 752 IC A4 PTT 01 12 5 5 14 PM Page 19 1 1 ...

Page 24: ...on us 6 9 16 Kamihigashi Hirano ku Osaka 547 Japan US apan 997 Icom Inc 01 12 5 5 38 PM Page 21 1 1 ...

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