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Last modified 2021-04-01

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Icom IC-751A

A picture of Icom IC-751A

SPECIFICATIONS

GENERAL
Type:Amateur HF transceiver
Frequency range:TX: 10-160 m + WARC
RX: 0.1-30 MHz
Tuning steps:10 /100 Hz, 1 KHz
Frequency stability:Less than 350 Hz @ 0 to 50C (32 to 122F)
Mode:AM / FM / SSB / CW / RTTY
Channels/memory management: 32 regular
2 scan edge
RAM board with lithium backup battery
Repeater shift/offset:No dedicated, use VFO A/B split
Power supply:13.8 VDC 15% (Mains option)
Current drain/power consumption:RX: 1.5 to 1.8 A
TX: Max 20 A
Antenna impedance/connector:50 ohm / SO-239
Dimensions (W*H*D):306*115*355 mm (12.05*4.53*13.98")
Weight:8.5 Kg (18.74 lb)
Other features:PBT. NB. VOX. Electronic keyer. SWR-meter.




RECEIVER SECTION
Receiver system: Triple conversion superheterodyne (FM)
1st IF: 70.45 MHz
2nd IF: 9.01 MHz
3rd IF: 455 KHz
Quadruple conversion superheterodyne (AM/SSB/CW/RTTY)
1st IF: 70.45 MHz
2nd IF: 9.01 MHz
3rd IF: 455 KHz
4th IF: 350 KHz
Sensitivity: AM (10 dB S/N)
0.1-0.5 MHz: 3 uv
0.5-1.6 MHz: 6 uV
1.6-30 MHz: 1 uV
FM (12 dB SINAD)
28-30 MHz: 0.3 uV
SSB/CW/RTTY (10 dB S/N)
0.1-0.5 MHz: 0.5 uV
0.5-1.6 MHz: 1 uV
1.6-30 MHz: 0.15 uV
Selectivity: AM (Narrow)
2.3 KHz (-6 dB), 3.8 KHz (-60 dB)
AM (Wide)
8 KHz (-6 dB), 18 KHz (-50 dB)
FM
15 KHz (-6 dB), 30 KHz (-50 dB)
SSB/CW/RTTY
2.3 KHz (-6 dB), 3.8 KHz (-60 dB)
Image rejection:80 dB
AF output power/speaker:2.6 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm




TRANSMITTER SECTION
RF output power: AM: 10-50 W
FM: 10-100 W
SSB: 10-100 W
CW: 10-100 W
RTTY: 10-100 W
Modulation system:
FM deviation:5 KHz
Spurious emissions:Less than -60 dB
Microphone impedance/connector:600 ohm / 8-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1985-1991 (Discontinued)
Additional info: This A-model includes some improvements over the previous version, but
it still has the battery-backed BIOS-RAM. Special procedure to replace
the battery, or the radio will die!

New price february 1986 in Sweden: SEK 14500:-
New price 1989 in the US: $1469.00
Related documents: User manual (5.9 MB)
RAM board battery replacement procedure (69 KB)
Modifications and fixes:
Reviews:
Options/Accessories:
AT-500
CR-64
FL-32A
FL-33
FL-52A
FL-53A
FL-63A
FL-70
FL-80
HM-36
IC-2KL
IC-EX310
IC-EX314
IC-HP1
IC-PS15
IC-PS30
IC-PS35
IC-SP3
RC-10
SM-8
SM-10
UT-30
Automatic antenna tuner
High stability crystal unit (0.5 ppm)
500 Hz CW narrow filter (IF: 9 MHz)
6 KHz AM filter (IF: 9 MHz)
500 Hz CW narrow filter (IF: 455 KHz)
250 Hz CW narrow filter (IF: 455 KHz)
250 Hz CW narrow filter (IF: 9 MHz)
2.8 KHz SSB wide filter (IF: 9 MHz)
2.4 KHz SSB narrow filter (IF: 9 MHz)
Standard hand microphone
500 W linear amplifier
Voice synthesizer unit
Replacement RAM board
Headphones
AC power supply. 13.8 VDC, 20 A
AC power supply. 13.8 VDC, 25 A
Internal power supply. 13.8 VDC, 25 A
External speaker
Frequency controller
Desk microphone with dual line output
Desk microphone with compressor & equalizer
Programmable tone encoder unit
A rear picture of Icom IC-751A