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Improved version of the ICOM ID-51A / ICOM ID-51E. Adds the new ‘Terminal Mode’ and ‘Access Point Modes’ enabling you to make D-STAR Callsign routed calls through the Internet, even from areas where no D-STAR repeater is accessible. (“Terminal ID” and “Access Point” features will only work through an Icom D-STAR repeater enabled with the latest G3 Software. The ID-51E PLUS2 will function only as a normal D-STAR radio until this implementation occurs.)

General characteristics

HAM bands
Frequency stability
± 2.5 p.p.m. @ 25 °C
Tuning steps
5 / 6.25 / 8.33 / 9 / 10 / 12.5 / 15 / 20 / 25 / 30 / 50 / 100 / 125 / 200 kHz
1304 channels in 1 bank(s)


0.52-1.710 / 76-108 / 108-174 / 380-479 MHz
AM   FM   N-FM   W-FM   GMSK   DV  
FM/N-FM: 0.18 µV (12 dB SINAD)
DV: 0.28 µV (1% BER)
FM: 55 dB
N-FM/DV: 50 dB
Receiver system
Double conversion superheterodyne
1st: 46.355 / 61.655 MHz
2nd: 450 kHz
Image rejection
≥ 60 dB
Audio output
Internal speaker


144-146 / 430-440 MHz
FM   N-FM   GMSK   DV  
0.1 / 0.5 / 2.5 / 5 W




Power requirements
5.5-7.4 V DC (Alkaline or battery pack)10-16 V DC external
Current drain RX
200-450 mA
2.5 A max


Dimensions (w×h×d)
58 × 105 × 26 mm (2.28 × 4.13 × 1.02 in) without knob and antenna
255 gr (9.0 oz) with BP-271 and antenna
Form factor
Between 2016 and 20xx in Japan

Other features

Amateur / Ham radio operators
Features + options
D-Star concept
Built-in GPS with logging
Micro SD card slot
128×104 dot-matrix display
Voice synthesizer
Voice memory
Voltage indicator
IPX7 waterproof
Twin RX
Li-Ion battery pack
CI-V interface
AD-92SMA Antenna connector adapter. Converts from a SMA to a BNC.
BC-02 BC-02/II 12V 300MA Charger (BC-73E/BC-74E)
BC-202 Rapid desktop charger. Charges the BP-271 in 2 hours (approx.) inc. BC-06 AC adapter.
BP-271 Li-Ion battery pack. 7.4V/1150mAh (min.), 1200mAh (typ). Operating time: 4.5 hours in FM and DV mode (Typical operation in 1:1:8 duty cycle). Same as supplied.
BP-272 Li-ion battery pack 7.4V/1880mAh (min.), 2000mAh (typ.) Li-ion battery. Operating 8 hours in FM mode and 7.5 hours in DV mode. (Typical operation in 1:1:8 duty cycle)
BP-273 Battery case (LR6 (AA) × 3)
CP-12L Cigar Lighter Lead (Right Angle Plug)
CP-19R Cigar Lighter cable
CS-51PLUS2 Cloning software for ID-51EPLUS2.
CT-17 CI-V level converter (communications interface)
FA-S270C Antenna VHF/UHF
HM-153LS Durable type earphone microphone with slim L-type connector
HM-166LS Light type earphone microphone with slim L-type connector
HM-186LS Compact type speaker microphone with slim L-type connector.
HM-75LS Remote control speaker microphone with slim L-type connector.
HS-94 Headset (Ear-piece type)
HS-95 Hands-free operation. Requires VS-1/1L/1SL VOX unit for use.
HS-97 Earphone with Throat-mic
LC-179 Helps protect the transceiver from scratches.
MB-127 OPC-2006LS Plug adapter cable. OPC-2006LS is required when using the HS-94, HS-95 and HS-97
OPC-2144 Slim L-type plug adapter cable (Regular 2-pin connectors to slim L-type 2-pin connectors)
OPC-2350LU The OPC-2350LU USB Data Communication Cable.
OPC-254/L DC Power lead with fuse
RS-MS1A Android application for the ID-5100A/E series
RS-MS3A Terminal/Access point mode application for Android
RS-MS3W Terminal/Access point mode software for Windows PC
SJ-1 Silicon jacket case. Protect the transceiver from accidental drops.
RigReference ID

Manuals, diagrams and brochures

Icom ID-51E Plus2 Leaflet PDF - 3.09 MB, submitted by RigReference
Icom ID-51PLUS2 Basic Manual PDF - 7.46 MB, submitted by RigReference
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