VHF/UHF DIGITAL TRANSCEIVER

Digicamo grayBlack
Leaf green

Carbon red
Cloud blue

Worldwide Digital Communication Whenever You Like
Simplex Call

D-STAR Communication withDigital Clear Voice and Data

Gateway Call

Local Area Call

The ID-51A is a VHF/UHF dual bander and has digital/FM dual mode functions.
The ID-51A makes not only conventional FM local calls, but also D-STAR calls
through a repeater network connected worldwide, or calls over an Internet
gateway. With the ID-51A, you can call a friend in another city, or eveninternationally through a D-STAR repeater, with digital clear audio. In addition,
the ID-51A can send digital voice with data; text messages, GPS position
information and pictures.

DR (D-STAR Repeater) Function
The DR (D-STAR Repeater) function makes D-STAR
communication simple. By only selecting a destination
call sign in “To”, and a nearby repeater in “From”, you
can talk with other D-STAR users. The call is automaticallyrouted to the repeater destination the called user lastaccessed. Call sign routing enables you to call aselected person wherever they are. In addition, using
the reflector function, you can talk through several
repeaters at once.

Access Point Mode and Terminal Mode Expand D-STAR Coverage
New modes in the ID-51A PLUS2 enable you to make Gateway calls through a PC (Windows ® ) or anAndroid TM device, even from areas where no D-STAR repeater is accessible.

Access Point ModeUse the ID-51A radio
connected to the Internet
through a PC (Windows®)
or AndroidTM device*, asan Access point. You canuse another D-STAR radio
to send your voice and/ordata through the Accesspoint radio.

Terminal Mode
Connect the ID-51A to theInternet through a PC(Windows ® ) or Android TMdevice*, and send yourvoice and/or data throughthe Internet gateway toa destination repeater.
Access point mode example

Terminal mode example* An optional free download software, RS-MS3W is required to be installed in the PC. An optional free download application, RS-MS3A is required to beinstalled in the Android TM device.

Integrated GPS, Dualwatch, AM/FM Receiver, IPX7 Submersible and MoreShows your current position and altitude on
the display, and offers a position reporting
function, in the DV mode. When receiving acall addressed to your call sign, the ID-51A
can automatically send your current position
information*1. Between ID-51A’s communication,replied position information can pop up on
the caller’s display. Using the integrated
GPS* 2 and repeater memories, the ID-51A
searches for nearby DV or analog FM repeaters.
*1 Function not available on all D-STAR networks.
*2 To use the Repeater Search function, the position data of therepeater is required. The ID-51A will be shipped with D-STAR
repeater memories preprogrammed, but the position data ofsome D-STAR repeaters may not be entered or exact.

TO:JCurrentP

VHF/UHF DIGITAL TRANSCEIVER

By using data in place of voice frames, the ID-51A
transfers data 3.5 times faster (3480 bps) than in theconventional DV mode (with voice). Pictures taken
by an Android TM device can be quickly transmitted inthe DV Fast Data mode.
* The DV Fast Data mode is not compatible with the DV mode low-speed datacommunication.

osi tion

DV Fast Data Mode*L3Y

RP

RS-MS1A, Remote Control Application
for AndroidTM* The OPC-2350LU data cable is required to connect to an Android TM device.
Note: Please check the system requirements on the Google Play TM RS-MS1A
page before installing the application.

Independent AM/FM ReceiverIntegrated GPS Receiver

Enhanced Digital Data Communication with AndroidTM Devices

The RS-MS1A enables you to control the ID-51A* with yourAndroidTM device. You can see the location of repeater sites
on a map application and set them to the ID-51A. In
addition, text messages and pictures can be sent andreceived with your Android™ device.

DR function example

Auto Reply

FM and AM broadcast
stations can be listenedt o w h i l e u si n g t h e
du al w at ch fu n ct i o n .
When an amateur radio
band signal is received,
the broadcast station
is automatically muted.

Broadcast radio example

Voice Memory Function*
The QSO recorder function
records incoming andoutgoing calls. The voicerecorder function canrecord an off-line
conversation. The recorded
voice message can be
repeatedly transmitted.
(Up to 60 seconds × 1 channel)

Voice recorder example* microSD card required.

Other Functions• Compact and lightweight• 5 W output power• 4.5 hour long lasting battery life with the BP-271*1• Free download CS-51PLUS2 cloning soft for editing
various memory settings with a PC• A total of 1304 memory channels, including 750
D-STAR repeater memories• CTCSS/DTCS code squelch with split tone function• Automatic repeater function automatically turns
on/off duplex operation and tone encoder• 16 DTMF memory channels (24 digits)• Optional CT-17, CI-V level converter for remoteradio control• Squelch release function to monitor a weak signal• External DC power jack
• Earphone cord antenna for FM broadcast receiving• LCD and keypad backlighting• Weather channels and VHF air band andother utility communication can be listened to*2• Priority watch• High speed cloning• Auto power save • Auto power off• Clock function• Key lock function*1 Typical operation with 1:1:8 duty cycle in DV mode. (Power save ON.)
*2 See specifications page for receiver range details.

Received position information example

Repeater map
exampleDR function setting Text messaging
exampleexample©2014 Google - Map data
©2014 Google

Conventional low-speed data mode

950 bps
DV Fast Data Mode

3480 bps

V/V, U/U, V/U Dualwatch
The dualwatch function
can monitor VHF/VHF,UHF/UHF or VHF/UHFbands simultaneously.*
The audio and squelchl evel s can be set
separately for the mainand sub-bands.

V/U Dualwatch example* DV/DV, AM/AM, FM-N/FM-N and DV/FM-N mode Dualwatch notavailable.

microSD Card Slot
When used with a microSD card (Up to 32 GB),you can store various content including voice
memory, DV auto reply message, TX voicemessage, QSO log, RX history log and GPS log
data. Memory channels, D-STAR repeater
memories and other personal settings can besaved to the microSD card, and can be loaded
into the ID-51A radio.
IPX7 submersible construction (1 m depth of water for 30 minutes)

VHF/UHF DIGITAL TRANSCEIVER
OPTIONS

SPECIFICATIONSGENERAL• Frequency coverage (Unit: MHz)
VersionTransmit
USAReceiver(A) 137–174, 380–479*(B) 108–174, 380–479*

144–148,
430–450*

Some options may not be available in some countries. Please ask your dealer for details.

BATTERY PACKS AND CASE

Battery
packs

Rechargeable 1880 mAh (min.), 7.5 hours
BP-272 Li-ion, 7.4V
2000 mAh (typ.) (DV/FM)(A) means A band, (B) means B band.
Guaranteed range: * 144–148, 440–450 MHz.

TRANSMITTERGMSK reactance modulation,• Modulation system DV,FM, FM-N FM reactance modulation• Output power (at 7.4 V DC) 5 W, 2.5 W, 1.0 W, 0.5 W, 0.1 W(High, Mid, Low2, Low1, S-low)Less than –60 dBc (High, Mid),• Spurious emissions
Less than –13 dBm (Low2, Low1, S-low)• Max. frequency deviation±5.0/2.5 kHz (FM/FM-N)• Ext. Mic impedance
2.2 kΩ

RECEIVER• Sensitivity DV,FM, FM-N
• Selectivity DVFMFM-N• Spurious rejection• Audio output power
Internal SP (16 Ω load)
External SP (8 Ω load)Less than 0.28 µV (at 1% BER)
Less than 0.18 µV (at 12 dB SINAD)
More than 50 dB
More than 55 dB
More than 50 dB
More than 60 dB(at 7.4 V DC, 10% distortion)
More than 400 mW
More than 200 mW

LR6 (AA) batteries×3

BP-273
BP-271

BP-272

BP-273-BC-202
BC-123S*1
Charges BP-271/
BP-272 in 2/3.5 hours.

* Approximately. Tx: Rx: standby = 1:1:8. Power save function
ON. GPS OFF.

WALL CHARGER

SPEAKER-MICROPHONES

BC-167S*2HM-75LS
For remote control1EARPHONE-MICROPHONES

HM-186LS

HM-183LS
Waterproof

HM-166LS

HM-153LS

2* BC-123SA for USA plug, SE for Europe plug. * BC-167SA for USA plug, SD for Europe plug, SV for Australia plug.

CARRYING CASEHEADSETS and PLUG ADAPTER CABLE

HS-94
Earhook type

HS-95
Behind-the-head type

HS-97
Throat type

OPC-2006LS
Required whenusing any ofthese headsets

SILICONE JACKET
CASE

SJ-1
For use with BP-271.

LC-179CIGARETTE LIGHTER
CABLESUSB DATA CABLE

DC POWER CABLE

PLUG ADAPTERCABLE

CP-12L
Built-in noisefilter
CP-19R
Built-in DC-DC converter

OPC-2350LU
PC/AndroidTM data cable.

OPC-2144
Required when using any of
HM-75A, HM-153 or HM-166.

OPC-254L/LR

SOFTWARES FOR Android/PC*
RS-MS1A: Remote control application for AndroidTM
RS-MS3A: Terminal/Access point mode application for AndroidTM
RS-MS3W: Terminal/Access point mode software for Windows® PC
CS-51PLUS2: Programming software for Windows® PC. Same as supplied.

OTHER OPTIONS
AD-92SMA: SMA-BNC antenna adapter
CT-17: CI-V level converter
FA-S270C: VHF/UHF antenna. Same as supplied
MB-127: Belt clip. Same as supplied* Applications for Android can be freely download from Google Play.
Software for Windows PC can be freely download from the Icom website.

Function Comparison Chart

All stated specifications are subject to change without notice or obligation.

Supplied accessories• Battery pack, BP-271• Wall charger, BC-167SA• Antenna, FA-S270C• Belt clip, MB-127• Hand strap• Programming software, CS-51PLUS2

RAPID CHARGER

Operatingtime*Capacity

Rechargeable 1150 mAh (min.), 4.5 hours
BP-271 Li-ion, 7.4V
(DV/FM)
1200 mAh (typ.)Broadcast
0.52–1.71
88.0–108.0• Type of emission
F2D, F3E, F7W• ModeDV, FM, FM-N, AM (Rx only)• Number of memory channels 1304 channels (including 500 regularchannels, 750 D-STAR repeater, 50 scanedges and 4 call)• Frequency resolution
1*, 5, 6.25, 8.33*, 9*, 10, 12.5, 15, 20, 25,30, 50, 100, 125 and 200 kHz* Selectable depending on the operating band.
• Operating temperature range –20˚C to +60˚C; –4˚F to +140˚F• Frequency stability±2.5 ppm(–20˚C to +60˚C on the basis of 25˚C)• Power supply requirement
7.4 V DC (with BP-271, BP-272)
Alkaline cells
5.5 V DC (with BP-273)
External DC power
10–16 V DC
• Current drain (at 7.4 V DC)
Tx High
Less than 2.5 A
Rx Internal SP (16 Ω)Less than 450 mA/350 mA (DV/FM, FM-N)
External SP (8 Ω)Less than 300 mA/200 mA (DV/FM, FM-N)• Antenna impedance
50 Ω (SMA)• Dimensions (W × H × D,
58 × 105.4 × 26.4 mm;projections not included)
2.3 × 4.1 × 1.0 in• Weight (approx.)
170 g; 6 oz (without battery),
255 g; 9 oz (with BP-271 & antenna)

TypeRS-MS1A

Repeater search function

DV fast data mode

Terminal mode

Access point mode

ID-51A PLUS2

Yes

Yes (DV/FM repeater)

Yes

Yes

Yes

ID-51A PLUS

Yes

Yes (DV/FM repeater)

Yes––*Yes (Limited functions)

Yes (DV repeater)–––*

ID-51A* ID-51A and ID-51A PLUS can transmit voice and /or data through the Access point, but can not be used as an Access point.

Note for the Terminal mode and Access point mode:• An Internet IP connection is necessary for a PC (Windows®) or AndroidTM device. (Either a dynamic or static IP address can be used.)• Before you set up the Access point, check any regulations or laws in your country.
• Only one D-STAR transceiver can transmit through an Access point at a time.
• For Access point or Terminal mode operation, you must register your MY and Access point call signs with a Gateway repeater/server thathas the RS-RP3C installed.
D-STAR (Digital Smart Technology for Amateur Radio) is a digital radio protocol developed by JARL (Japan Amateur Radio League). Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) inJapan, the United States, the United Kingdom, Germany, France, Spain, Russia, Australia, New Zealand and/or other countries. Android and Google Play are registered trademarks or trademarks of Google Inc. Windows iseither a registered trademark or a trademark of Microsoft Corporation in the United States and/or other countries. All other trademarks are the properties of their respective holders.
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