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Last modified 2023-09-19

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Icom IC-551

A picture of Icom IC-551

SPECIFICATIONS

GENERAL
Type:Amateur VHF transceiver
Frequency range: Japanese domestic market
TX: 50-54 MHz
RX: 50-54 MHz
Tuning steps:100 Hz, 1 / 5 / 10 KHz
Frequency stability:Less than ±1.5 KHz @ -10 to +60°C (14 to 140°F)
Mode:AM / SSB / CW (FM option)
Channels / memory management: 3 regular
RAM storage
Repeater shift / offset:No dedicated. Use VFO A/B split
Power supply:Mains: 100 VAC ±10%
or 13.8 VDC ±15%
Current drain / power consumption:RX: 0.9 to 1.1 A @ 13.8 VDC
TX: 3 to 3.3 A @ 13.8 VDC
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):241*111*264 mm (9.49*4.37*10.39")
Weight:6.1 kg (13.44 lb)
Other features:NB.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne (FM) with optional FM unit
1st IF: 9.0115 MHz
2nd IF: 455 KHz
Triple conversion superheterodyne (AM/SSB/CW)
1st IF: 9.0115 MHz
2nd IF: 10.75 MHz
3rd IF: 9.0115 MHz
Sensitivity: FM: 0.6 uV (20 dB quieting), With optional FM unit
AM/SSB/CW: 0.5 uV (10 dB S/N)
Selectivity: FM (With optional FM unit)
15 KHz (-6 dB)
30 KHz (-60 dB)
AM/SSB/CW
2.2 KHz (-6 dB)
4.4 KHz (-60 dB)
AM/SSB/CW (With optional P.B.Tune unit)
Down to 1 KHz (-6 dB)
Image rejection:
AF output power / speaker:2 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power:

Pwr
AM:1-4 W
FM:1-10 W
SSB (PEP):1-10 W
CW:1-10 W
Modulation system:
Max FM deviation (Factory set):±5 KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:600 ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 198x-198x (Discontinued)
Additional info:
Related documents:
Modifications and fixes:
Reviews:
Options / Accessories:
IC-EX2
IC-EX106
IC-EX107
IC-EX108
IC-HM5
IC-HP1
IC-SM2
Extension terminal with 25 KHz marker
FM unit
VOX unit
P.B.Tune unit
Noise cancelling hand microphone
Headphones
Desk microphone