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Last modified 2021-03-12

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Icom IC-490A

A picture of Icom IC-490A

SPECIFICATIONS

GENERAL
Type:Amateur UHF transceiver
Frequency range:430-440 MHz
Tuning steps: FM: 1 / 5 / 25 KHz
SSB/CW: 100 Hz / 1 KHz
Frequency stability:2.5 KHz @ -10 to +60C (14 to 140F)
Mode:FM/SSB/CW
Channels/memory management: 5 regular
RAM storage
Repeater shift/offset:Any inband in 100 KHz steps
Power supply:13.8 VDC 15%
Current drain/power consumption:RX: 600-900 mA
TX: Max 3.6 A
Antenna impedance/connector:50 ohm / N-jack
Dimensions (W*H*D):170*64*218 mm (6.69*2.52*8.58")
Weight:2.6 Kg (5.73 lbs)
Other features:NB. Scanning.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne (SSB/CW)
1st IF: 39.38 MHz
2nd IF: 10.75 MHz
Triple conversion superheterodyne (FM)
1st IF: 39.38 MHz
2nd IF: 10.75 MHz
3rd IF: 455 KHz
Sensitivity: FM: 0.6 uV (20 dB quieting)
SSB/CW: 0.5 uV (10 dB S+N/N)
Selectivity: FM: 15 KHz (-6 dB), 30 KHz (-60 dB)
SSB/CW: 2.4 KHz (-6 dB), 4.8 KHz (-60 dB)
Image rejection:
AF output power/speaker:2 W at ?% distortion / 8 ohm
External speaker connector:3.5 mm, 4-8 ohm




TRANSMITTER SECTION
RF output power: Hi: 10 W
Lo: 1 W
Modulation system: FM: Variable reactance frequency modulation
SSB: Balanced modulation
FM deviation:5 KHz
Spurious emissions:Less than -60 dB
Microphone impedance/connector:1.3 Kohm / 8-pin (Metal locking ring connector)
Microphone sensitivity:? mV




MISCELLANEOUS
Manufactured:Japan, 1982-198x (Discontinued)
Additional info:
Related documents:User manual (4.9 MB)
Modifications and fixes:
Reviews:
Options/Accessories:
BC-10A
IC-3PE
IC-CK1
IC-SM5
IC-SP4
Memory backup AC power supply
AC power supply. 13.8 VDC, 3 A
Memory backup DC power cord
Desk microphone
Mobile speaker