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Icom IC-271A

A picture of Icom IC-271A


Type:Amateur VHF transceiver
Frequency range: USA
TX: 143.8-148.2 MHz
RX: 143.8-148.2 MHz
Tuning steps:10 / 100 Hz, 1 / 5 KHz
Frequency stability:Less than 1.5 KHz @-10 to +60C (14 to 140F)
Mode:FM / SSB / CW
Channels / memory management: 32 regular
2 scan edge
RAM storage with lithium battery backup
Repeater shift/offset: Any in-band separation in 10 KHz steps
Power supply:13.8 VDC 15% (Mains option)
Current drain / power consumption:RX: 1.2 to 1.4 A
TX: Max 6 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):285*110*275 mm (11.22*4.33*10.83")
Weight:5.2 Kg (11.46 lb)
Other features:CTCSS/PL encoder. VOX. NB. CI-IV computer control.

Receiver system: Single conversion superheterodyne (SSB/CW)
IF: 10.75 MHz
Double conversion superheterodyne (FM)
1st IF: 10.75 MHz
2nd IF: 455 KHz
Sensitivity: FM: 0.3 uV (12 dB SINAD)
SSB/CW: 0.5 uV (10 dB S+N/N)
Selectivity: FM
15 KHz (-6 dB)
30 KHz (-60 dB)
2.4 KHz (-6 dB)
4.8 KHz (-60 dB)
Image rejection:
AF output power / speaker:2 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm

RF output power: 1-25 W adjustable
Modulation system:FM: Variable reactance
SSB: Balanced
Max FM deviation (Factory set):5 KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:600 ohm / 8-pin (Metal locking ring connector)
Microphone input level:? mV

Manufactured:Japan, 1983-198x (Discontinued)
Additional info: Battery-backed BIOS-RAM. Special procedure to replace the
battery, or the radio will die!
Related documents: User manual (7.2 MB)
Service manual (23 MB)
RAM board battery replacement procedure (69 KB)
Modifications and fixes:
Reviews:CQ: July 1984, page 49
Options / Accessories:
Interface unit
Voice synthesizer unit
Replacement RAM board
Internal power supply, 13.8 VDC, 8 A