Icom ID-31A Plus UHF D-Star Transceiver

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Icom ID-31A Plus UHF D-Star Transceiver SKU: ZIC-ID-31A-PLUS


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Icom ID-31A Plus 5W UHF D-Star Transceiver

The familiar ID-31A is back with the enhancements introduced with the ID-51A PLUS 2, for the ham who wants to get into D-STAR without breaking the bank!

Easy operation
Just select the destination repeater in "To" and a nearby repeater in "From", and you are ready to call other D-STAR stations. Minimum action required with the simple user interface and DR (D-STAR Repeater) function.

Worldwide digital communication wherever you are
Terminal and Access Point modes enhance the access to D-Star's worldwide network. Communicate long-distance regardless of your location or repeater location.

Share pictures and text messages
Pictures and text messages on an Android™ device can be transmitted over D-STAR network using the RS-MS1A application. Data can be sent quicker in the DV Fast Data mode.

IP1X waterproof, compact, lightweight and tough
With Icom's pioneering IPX7 waterproofing and pro-grade construction, the ID-31A PLUS is perfect for your shack or playing in harsh outdoor environments.

DV/FM repeater search function
The DV/FM near repeater search function assists you in accessing nearby repeaters, even in areas you are visiting for the first time. This function searches for nearby repeaters using the repeater memories with GPS position information.

Integrated GPS Receiver
Shows your current location and altitude on the display, and offers location reporting and automatic reply functions in the DV mode. GPS log can be saved in a microSD card.

Other features:

  • Internet-enabled Terminal Mode and Access Point mode compatible (Full compatibility with the RS-MS1A when used with the OPC-2350LU)
  • A total of 1302 memory channels, including 750 D-STAR repeater memories/30 groups
  • Increased GPS memory (200 entries) / QZSS compatible integrated GPS receiver DR mode enhancement (nearest repeater selection, analog repeater, reflector etc.)
  • D-PRS function enhancement (added symbols etc.)
  • CI-V command enhancement
  • Voice Recorder function – Transmit and repeat voice memory (60 sec. × 1 memory.)
  • 200 GPS memory channels (including altitude data)
  • CI-V commands added, such as the GPS TX mode, DV data TX and GPS ON/OFF settings
  • GPS transmitting mode and low-speed data communication can be used at the same time (DV mode)
  • GPS data output
  • Call sign, repeater list and GPS memory import and export in the CSV format
  • Skip settings for scanning
  • Direct transmission of DTMF code
  • 5 W maximum output power and five selectable transmit power levels
  • Speech function announces frequency, mode and call sign
  • Compact UHF antenna supplied


Frequency coverageUSA TX: 430.000–450.000 MHz*1
RX: 400.000–479.000 MHz*1
Type of emission F2D, F3E, F7W
Number of memory channels 1302 channels
(including 500 regular channels,
750 D-STAR repeater,
50 program scan edges and 2 call)
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)
Antenna impedance 50 Ω (SMA)
Power supply requirements 7.4 V DC (with BP-271/BP-272),
5.5 V DC (with BP-273)
10.0–16.0 V DC (External DC power)
Current drainTX High Less than 2.5 A
RX Internal SP (16 Ω):
Less than 450 mA (DV),
Less than 350 mA (FM, FM-N)

External SP (8 Ω):
Less than 300 mA (DV),
Less than 200 mA (FM, FM-N)
(W×H×D projections not included)
58×95×25.4 mm;
2.3×3.7×1 in
Weight (approximately) 220 g; 7.8 oz
(including BP-271 and antenna)

Guaranteed range: *1 440.000–450.000 MHz, *2 430.000–440.000 MHz.


Modulation systemDV GMSK reactance modulation
FM, FM-N FM reactance modulation
Output power
(at 7.4 V DC)
5 W, 2.5 W, 1 W, 0.5 W, 0.1 W
(High, Mid, Low2, Low1, S-low)
Spurious emissions Less than -60 dBc (High, Mid),
Less than -13 dBm (Low2, Low1, S-low)
Max. frequency deviation ±5.0 kHz (FM), ±2.5 kHz (FM-N)


Intermediate frequency 46.35 MHz (1st), 450 kHz (2nd)
SensitivityDV Less than -11 dBμ (at BER 1%)
FM, FM-N Less than -15 dBμ (at 12 dB SINAD)
Squelch sensitivity Less than -15 dBμ (Threshold)
Selectivity More than 55 dB (FM),
More than 50 dB (DV, FM-N)
Spurious rejection More than 60 dB
Audio output powerInternal SP More than 400 mW
(16 Ω load at 10% distortion)
External SP More than 200 mW
(8 Ω load at 10% distortion)
  • Icom ID-31A Plus UHF Transceiver
  • Antenna
  • Battery Charger
  • BP-271 Rechargeable Li-ion battery pack
  • MB-127 Belt Clip
  • Hand Strap
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