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Last modified 2026-02-06

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Icom IC-4SA

A picture of Icom IC-4SA

SPECIFICATIONS

GENERAL
Type:Amateur UHF transceiver
Frequency range: USA
TX: 440-450 MHz
RX: 440-450 MHz
Australia and Asia
TX: 430-440 MHz
RX: 430-440 MHz
Tuning steps:5 / 10 / 12.5 / 15 / 20 / 25 / 20 / 100 KHz
Frequency stability:Max ? ppm
Mode:FM
Channels / memory management: 48 regular
1 call
RAM storage with lithium battery backup
Repeater shift / offset:Programmable
Power supply:7.2-12 VDC (Depending on battery pack)
or 6-16 VDC external
Current drain / power consumption:RX: 19-250 mA
TX: Max 1.6 A
Antenna impedance / connector:50 ohm / BNC
Dimensions (W*H*D):49*103*33 mm (1.93*4.06*1.3"), with BP-82
Weight:270 g (9.52 oz), with BP-82
Other features:Clock and timer. CTCSS/PL option.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 30.875 MHz
2nd IF: 455 KHz
Sensitivity:0.18 uV (12 dB SINAD)
Squelch sensitivity:
Noise figure:
Selectivity:
Image rejection:
AF output power / speaker:200 mW at 10% distortion / 8 ohm
External speaker connector:




TRANSMITTER SECTION
RF output power:

High
@13.8 V
High
@7.2 V
Low 3
@13.8 V
Low 3
@7.2 V
Low 2Low 1
70 cm:5 W2 W3.5 W2 W1.5 W500 mW
Modulation system:Variable reactance frequency modulation
Max FM deviation (Factory set):±5 KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:2 Kohm / ?-pin
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1989-199x (Discontinued)
Additional info:
Related documents: User manual (1.9 MB)
Tech talk (5.8 MB)
Service manual (21.7 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
BP-81
BP-82
BP-83
BP-84
BP-85
BP-90
UT-50
UT-51
NiCd battery pack. 7.2 V, 110 mAh
NiCd battery pack. 7.2 V, 300 mAh
NiCd battery pack. 7.2 V, 600 mAh
NiCd battery pack. 7.2 V, 1000 mAh
NiCd battery pack. 12 V, 340 mAh
Battery case. Six LR6/AA batteries
CTCSS/PL tone squelch unit (Encoder/decoder)
CTCSS/PL encoder unit