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Last modified 2024-07-03

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Icom IC-745

A picture of Icom IC-745

SPECIFICATIONS

GENERAL
Type:Amateur HF transceiver
Frequency range: TX: 10-160 m + WARC
RX: 0.1-30 MHz
Tuning steps:10 / 50 Hz, 1 KHz
Frequency stability:Less than 1 KHz @ -10 to +60°C (14 to 140°F)
Mode: TX: SSB / CW / RTTY (FM option)
RX: AM / SSB / CW / RTTY (FM option)
Channels/memory management: 16 regular (Tunable)
RAM storage with lithium battery backup
Repeater shift / offset:No dedicated, use VFO A/B split ("Duplex") instead
Power supply:13.8 VDC ±15% (Mains option)
Current drain / power consumption:RX: 1.5 A (Squelched)
TX: Max 20 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):280*111*355 mm (11*4.37*14")
Weight:8 Kg (17.64 lb), without options
Other features:PBT. NB. VOX. Transverter terminal.




RECEIVER SECTION
Receiver system: Triple conversion superheterodyne
1st IF: 70.4515 MHz
2nd IF: 9.0115 MHz
3rd IF: 455 KHz
Sensitivity: AM (10 dB S/N)
0.1-1.6 MHz: 20 uV
1.6-30 MHz: 1 uV
FM (12 dB SINAD, with optional EX-242)
1.6-30 MHz: 0.3 uV
SSB/CW/RTTY (10 dB S/N)
0.1-1.6 MHz: 3.2 uV
1.6-30 MHz: 0.15 uV
Selectivity: AM
4 KHz (-6 dB)
15 KHz (-60 dB)
AM (Filter switch ON)
2.4 KHz (-6 dB)
4.8 KHz (-60 dB)
FM (With optional EX-242)
15 KHz (-6 dB)
30 KHz (-50 dB)
SSB/CW/RTTY
2.2 KHz (Adjustable down to 800 Hz) (-6 dB)
4.2 KHz (-60 dB)
Image rejection:
AF output power / speaker:2.8 W at ?% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power:

12-160 m10 m
FM:~10-100 W~10-50 W(With EX-242 option)
SSB (PEP):~10-100 W~10-50 W
CW:~10-100 W~10-50 W
Modulation system:
Max FM deviation (Factory set):±? KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:600 ohm / 8-pin (Metal locking ring connector)
Microphone input level:~12 mV (Typical)




MISCELLANEOUS
Manufactured:Japan, 1983-1986 (Discontinued)
Additional info: Battery-backed BIOS-RAM. Special procedure to replace the
battery, or the radio will die!

New price october 1983 in Sweden: SEK 8950:-
New price 1984 in Sweden: SEK 8950:-
Related documents: User manual (4.9 MB)
RAM board battery replacement procedure (69 KB)
Modifications and fixes:
Reviews:
Options / Accessories:
AT-100
AT-500
EX-241
EX-242
EX-243
EX-314
FL-44A
FL-45
FL-52A
FL-53A
FL-54
HM-12
HP-1
IC-2KL
MB-12
PS-15
PS-30
PS-35
SM-6
SP-3
Automatic antenna tuner, 100 W
Automatic antenna tuner, 500 W
Marker unit. 25 or 100 KHz
FM unit
Electronic keyer unit
Replacement RAM board
SSB filter. 2.4 KHz (-6 dB). IF: 455 KHz
CW filter. 500 Hz (-6 dB). IF: 9.0115 MHz
CW filter. 500 Hz (-6 dB). IF: 455 KHz
CW filter. 250 Hz (-6 dB). IF: 455 KHz
CW filter. 270 Hz (-6 dB). IF: 9.0115 MHz
Standard hand microphone
Headphones
500 W linear amplifier
Mobile mounting bracket
Power supply
Power supply. 13.8 VDC, 25 A
Internal power supply
Desk microphone, electret
External speaker
A rear picture of Icom IC-745