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Last modified 2021-03-31

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Icom IC-740

A picture of Icom IC-740

SPECIFICATIONS

GENERAL
Type:Amateur HF transceiver
Frequency range:TX:10-160 m + 30 m
RX: 10-160 m + WARC
Tuning steps:10 / 100 Hz, 1 KHz
Frequency stability:Less than 1 KHz @ -10 to +60C (14 to 140F)
Mode:SSB / CW / RTTY (FM option)
Channels/memory management: 12 regular
RAM storage. External 9-12 VDC backup voltage to separate terminal
Repeater shift/offset:No dedicated. Use VFO A/B split
Power supply:13.8 VDC 15% (Mains option)
Current drain/power consumption:RX: ? mA
TX: Max 20 A
Antenna impedance/connector:50 ohm / SO-239
Dimensions (W*H*D):286*111*374 mm (11.26*4.37*14.72")
Weight:8 Kg (17.64 lb)
Other features:PBT. VOX. NB. Transverter terminal. SWR-meter




RECEIVER SECTION
Receiver system: Triple conversion superheterodyne
1st IF: 39.7315 MHz
2nd IF: 9.0115 MHz
3rd IF: 455 KHz
Sensitivity: SSB/CW/RTTY: 0.3 uV (10 dB S+N/N)
FM: 0.3 uV (20 dB noise quieting), with EX-243 option
Selectivity:SSB/RTTY: 2.4 KHz (-6 dB), 4.5 KHz (-60 dB)
Image rejection:60 dB
AF output power/speaker:2.6 W at ?% distortion / 8 ohm
External speaker connector:3.5 mm




TRANSMITTER SECTION
RF output power: FM: Max 10 W (With optional EX-242)
SSB: Max ~100 W (200 W input)
CW: Max ~100 W (200 W input)
RTTY: Max ~100 W (200 W input)
Modulation system:
FM deviation:? KHz (With optional EX-242)
Spurious emissions:Less than -50 dB
Microphone impedance/connector:1.3 Kohm / 8-pin (Metal locking ring connector)
Microphone input level:~120 mV (Typical)




MISCELLANEOUS
Manufactured:Japan, 1982-198x (Discontinued)
Additional info:
Related documents:User manual (4 MB)
Modifications and fixes:
Reviews:
Options/Accessories:
BC-10A
EX-241
EX-242
EX-243
FL-44
FL-45
FL-52
FL-53
FL-54
IC-2KL
IC-AT100
IC-AT500
IC-HM7
IC-HM10
IC-HP1
IC-MB12
IC-PS15
IC-PS740
IC-SM5
IC-SP3
Memory backup AC power supply
Marker unit
FM unit
Electronic keyer unit
2.4 KHz (-6 dB) SSB filter. IF: 455 KHz
500 Hz (-6 dB) CW/RTTY filter. IF: 9.0115 MHz
500 Hz (-6 dB) CW/RTTY filter. IF: 455 KHz
250 Hz (-6 dB) CW filter. IF: 455 KHz
270 Hz (-6 dB) CW filter. IF: 9.0115 MHz
Linear amplifier. 500 W
Automatic antenna tuner. 100 W
Automatic antenna tuner. 500 W
Standard hand microphone
Scanning microphone
Headphones
Mobile mounting bracket
External AC power supply
Internal power supply unit
Electret desk microphone
External speaker
A rear picture of Icom IC-740