ID-51A/E PLUS2 | ICOM
Dual band V/UHF handheld transceiver for D-STAR / Analog operations. Access point and terminal mode, integrated GPS, dualwatch, AM/FM receiver, IPX7 submersible. Ideated in Japan, year of introduction 2014 - updated in 2016.
Reference market : ham-radio
0.5200 ~ 1.7100 MHz
76.0000 ~ 108.0000 MHz 
108.0000 ~ 174.0000 MHz 
137.0000 ~ 174.0000 MHz 
380.0000 ~ 479.0000 MHz  
137.0000 ~ 174.0000 MHz  
144.0000 ~ 148.0000 MHz 
400.0000 ~ 479.0000 MHz  
420.0000 ~ 450.0000 MHz 
430.0000 ~ 450.0000 MHz 
430.0000 ~ 440.0000 MHz 
|Modulation mode||AM  / FM / FM-W  / D-STAR|
|Tuning step||1 / 5 / 6.25 / 8.333 / 9 / 10 / 12.5 / 15 / 20 / 25 / 30 / 50 / 100 / 125 / 200 KHz|
3.2 uV (0.52~1 MHz, 10dB S/N)
1.8 uV (1~1.71 MHz, 10dB S/N)
1.8 uV (108~137 MHz, 10dB S/N)
|FM / FM-N||
0.18 uV (144~148 MHz, 12dB SINAD)
0.32 uV (137~174 MHz except amateur band, 12dB SINAD)
0.18 uV (430~450 MHz, 12dB SINAD)
0.32 uV (380~479 MHz except amateur band, 12dB SINAD)
3.2 uV (76~82 MHz, 12dB SINAD)
1.8 uV (82~108 MHz, 12dB SINAD)
0.28 uV (144~148 MHz, 1% BER)
0.28 uV (430~450 MHz, 1% BER)
|Selectivity||FM||> 55dB (on adjacent channel)|
|FM-N||> 50dB (on adjacent channel)|
|D-STAR||> 50dB (on adjacent channel)|
|Image and spurious rejection||> 60 dB|
|Frequency stability||± 2.5 ppm from -20°C to +60°C|
46.350 MHz (band "A")
61.650 MHz (band "B")
3.2 uV (0.52~1 MHz)
1.8 uV (1~1.71 MHz)
1.8 uV (108~137 MHz)
|FM / FM-N||
0.18 uV (144~148 MHz)
0.18 uV (430~450 MHz)
|Output power||VHF||5 / 2.5 / 1 / 0.5 / 0.1 W|
|UHF||5 / 2.5 / 1 / 0.5 / 0.1 W|
|Spurious emission||at 5 or 2.5W||< -60 dB|
|at 1, 0.5 or 0.1W||< -13 dBm|
|Maximum FM deviation||
± 5.0 KHz (FM)
± 2.5 KHz (FM-N)
500 regular memories
750 D-STAR repeater memories
50 scan edges (2 x 25 pairs)
4 call memories
sub-1 KHz frequency resolution
Segment-bar signal meter
DTMF / CTCSS / DTCS / DSQL
|Antenna||SMA 50Ω connector|
5.5 VDC (with BP-273, Li-Ion battery pack)
7.4 VDC (with BP-271 or BP-272, Li-Ion battery pack)
10~16 VDC external
350 mA RX, max (at 7.4 VDC, internal speaker, FM)
200 mA RX, max (at 7.4 VDC, external speaker, FM)
450 mA RX, max (at 7.4 VDC, internal speaker, D-STAR)
300 mA RX, max (at 7.4 VDC, external speaker, D-STAR)
2.5A TX, max power (at 7.4 VDC)
0.4W with a 16Ω internal load
0.2W with an 8Ω external load
|Audio output||Jack 3.5 mm headphone|
|Connections||Jack 2.5 mm (PC, clone)|
|Mechanical and environmental data :|
|Operating temperature||from -20°C to +60°C|
|Dimensions||58 (W) x 105 (H) x 26 (D) mm projections not included|
170g without battery pack
255g with battery pack BP-271 and antenna
 88~108 MHz for USA version
 Band "B"
 Band "A"
 Band "A" and "B"
 Guaranteed range 144~148 and 430~450 MHz
 EXP version
 USA, EXP-01 and AUS versions
 AUS version
 USA version
 EXP-01 version
 Only on 0.52~1.71 and 108~136.995 MHz
 Only on 76~108 MHz
The ID-51A PLUS2 is a VHF/UHF dual bander and has digital/FM dual mode functions. Please note that "PLUS2" adds Terminal and Access Point modes to the original ID-51A PLUS device. The handheld 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 this ICOM you can call a friend in another city, or even internationally through a D-STAR repeater, with digital clear audio. In addition the transceiver can send digital voice with data: text messages, GPS position information, pictures. The DR (D-STAR Repeater) function makes 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 automatically routed to the repeater destination the called user last accessed. Call-sign routing enables you to call a selected person wherever they are. In addition, using the reflector function, you can talk through several repeaters at once.
ICOM ID51A-PLUS2 in Simplex, Access Point, and Terminal Mode
The dualwatch function can monitor VHF/VHF, UHF/UHF or VHF/UHF bands simultaneously. The audio and squelch levels can be set separately for the main and sub-bands.
When used with a microSD card (Up to 32 GB), you can store various content including voice memory, DV auto reply message, TX voice message, QSO log, RX history log and GPS log data. Memory channels, D-STAR repeater memories and other personal settings can be saved to the microSD card, and can be loaded into the ID-51A radio.
- Compact and lightweight.
- Independent AM/FM receiver.
- MicroSD card (Up to 32GB).
- 4.5 hour long lasting battery life with the BP-271.
- 10-step battery voltage indicator.
- Free download CS-51PLUS2 cloning soft for editing various memory settings with a PC.
- A total of 1304 memory channels.
- 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 remote radio 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 and other utility communication can be listened.
- Priority watch.
- High speed cloning.
- Auto power save.
- Auto power off.
- Clock function.
- Key lock function.
ID-51A / ID-51E PLUS2 price :
We have collected for your convenience the ID-51 PLUS2 sales prices and their trend over time. Of course offers, accessories, warranty terms and conditions can lead to different figures.
With software and CPS file for worldwide D-STAR repeaters list.
Your opinion on merits, defects, experiences, with this radio set is welcome. Write your review, after a technical evaluation by our staff if found suitable will be published on this page. We thank you for your precious contribution.