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Last modified 2022-04-13

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Icom IC-4iA

A picture of Icom IC-4iA

SPECIFICATIONS

GENERAL
Type:Amateur UHF transceiver
Frequency range: USA
TX: 440-450 MHz
RX: 440-450 MHz
Australia
TX: 430-440 MHz
RX: 430-440 MHz
Tuning steps:5 / 10 / 12.5 / 15 / 20 / 25 / 30 / 50 KHz
Frequency stability:10 ppm @ 0 to 50C (32 to 122F)
Mode:FM
Channels/memory management: 10 regular (Easy mode) or 100 (Multi-function mode)
1 scan edge pair
Priority watch
RAM storage with rechargeable battery backup
Repeater shift/offset:0 to ? MHz
Power supply:6-12 VDC (Depending on battery pack)
or 6-16 VDC external
Current drain/power consumption:RX: 18-150 mA @ 13.8 VDC
TX: 0.1-1.4 A @ 13.8 VDC
Antenna impedance/connector:50 ohm / BNC
Dimensions (W*H*D):58*91*30 mm (2.28*3.58*1.18"), with BP-121
Weight:260 g (9.17 oz), with BP-121
Other features: CTCSS/PL (Pre-install in the USA version). Clock. Backlit display.
Sixteen DTMF memories.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 35.8 MHz
2nd IF: 455 KHz
Sensitivity:0.18 uV (12 dB SINAD)
Selectivity:15 KHz (-6 dB)
30 KHz (-60 dB)
Image rejection:
AF output power/speaker:200 mW at 10% distortion / 8 ohm
External speaker connector:8 ohm




TRANSMITTER SECTION
RF output power:

HighLow 3Low 2Low 1
70 cm:1-5 W1-2.5 W500 mW20 mW

The "High" end "Low 3" power settings depend on voltage / battery pack.
Modulation system:Variable reactance frequency modulation
FM deviation:5 KHz
Spurious emissions:Better than -60 dB @ High power
Microphone impedance/connector:2 Kohm / ?-conductor
Microphone input sensitivity:? mV




MISCELLANEOUS
Manufactured:Japan, 1992-1993 (Discontinued)
Additional info:
Related documents: User manual (1.9 MB)
Tech talk (3.9 MB)
Modifications and fixes:
Reviews:
Options/Accessories:
AD-26
BC-77A
BC-77D
BC-77E
BC-77E
BC-78D
BC-78E
BC-79
BP-120
BP-121
BP-122
BP-123
BP-124
CP-13L
HM-9L
HM-46L
HM-55A
HS-51
LC-83
LC-84
LC-85
MB-30
OPC-288L
UT-72
Charger adapter for BC-79
Wall charger. For BP-121, 122, 123 and 124
Wall charger. For BP-121, 122, 123 and 124
Wall charger. For BP-121, 122, 123 and 124
Wall charger. For BP-121, 122, 123 and 124
Wall charger. For BP-121
Wall charger. For BP-121
Rapid charger. For BP-121, 122, 123 and 124
Battery case. For six R6 / AA alkaline or NiCd cells
NiCd battery pack. 7.2 V, 400 mAh
NiCd battery pack. 7.2 V, 700 mAh
NiCd battery pack. 7.2 V, 1200 mAh
NiCd battery pack. 12 V, 400 mAh
Cigarette lighter cable, with noise filter
Speaker-microphone
Compact speaker-microphone
Speaker-microphone with DTMF pad
Headset with VOX & PTT
Carrying case. For use with BP-121
Carrying case. For use with BP-120 and 122
Carrying case. For use with BP-123 and 124
Mobile mounting bracket
DC power cable
Tone squelch unit (CTCSS/PL encoder/decoder)