ID-4100A
ID-4100A Features:
- The QUICK key allows instant access to menus listing dedicated functions depending on mode
- Multiple scan functions for Memory/Bank scan, Full scan, Band scan, Program scan, Program link scan, Duplex scan Tone scan and DR scan
- 16 channels of DTMF memory (24-digit)
- CTCSS/DTCS signaling with the split tone functions (analog mode)
- 8.33 kHz air band channel reception
- Auto repeater function (USA version only)
- HM-207S remote-control hand microphone (supplied as standard)
Entry Level D-STAR Mobile with Big Rig Features
Since the introduction of D-STAR in 2001, Icom has been committed to improving and advancing the D-STAR experience. The ID-4100A and it’s advance technology does just that! The upgraded user interface and new enhancements provide a product other digital voice modes cannot match!
Output Power |
50W, 15W, 5W (Hi, Mid, Low) | |
RX Frequencies: |
118-174, 230-550MHz | |
Memory Channels: |
1000 regular channels, 4 call channels, 50 program scan edges, 1500 repeater memories and 300 GPS memory |
User Friendly
The ID-4100A’s full dot-matrix display gives the user the ability to see a lot of information on the screen. For example, Repeater list or GPS position information are clearly arranged and easy to read.


Users can pick between white, green, amber or blue as the backlight color. The backlight night time setting function, allows you to automatically change the display backlight brightness when the designated time comes.

The DV/FM near repeater search function assists you in accessing nearby repeaters, even in areas you visit for the first time. The function searches for nearby repeaters using the repeater memories with the GPS position information. To use the near repeater search function, the position data of the repeater is required. The ID-4100A will ship with the D-STAR repeater memories preprogrammed, but the position data of some D-STAR repeaters may not be entered or exact.
Built-in GPS
The integrated GPS receiver shows your own position, course, speed and altitude on the display and can be used for exchanging position reports, D-PRS and searching for nearby repeaters.
Voice & Data Storage
Add a microSD* card to store various information including voice memory, TX voice message, QSO log, RX history log, and GPS log data. Memory channels and other settings can be saved and loaded into the transceiver.
* MicroSD card is sold separately.
Android™ and iOS™ Apps Available
Install the UT-137 Bluetooth® board and download the RS-MS1I (for iOS™ devices) or RS-MS1A (for Android™ devices) to enable you to wirelessly connect to the ID-4100A and remotely set the DR functions, link with a map application, and send/receive messages over the DV mode. In addition, pictures taken by a smart device can be transmitted via the DV Fast Data mode or DV mode.
Download from Google Play™ > | Download from Apple's App Store >




| Software/App | OS | Function | Required option |
|---|---|---|---|
| RS-MS1A | Android™ 4.0 or later | Remote control operation | UT-137 |
| RS-MS1I | iOS™ 8.0.1 or later | Remote control operation | UT-137 |
| RS-MS3A | Android™ 4.0 or later | Terminal/Access Point mode | OPC-2350LU |
| RS-MS3W | Windows® 7 or later | Terminal/Access Point mode | OPC-2350LU |
| CS-4100 | Windows® 7 or later | Programming | microSD card/OPC-2350LU/ OPC-1529R/OPC-478UL |
Additional Features
- Data place in voice frames transfer data 3.5 times faster (3480 bps) than in the conventional DV mode (with voice).
- Terminal mode and access point mode
- The QUICK key allows instant access to menus listing dedicated functions depending on mode
- Multiple scan functions for Memory/Bank scan, Full scan, Band scan, Program scan, Program link scan, Duplex scan Tone scan, and DR scan
- 16 channels of DTMF memory (24-digit)
- CTCSS/DTCS signaling with the split tone functions (analog mode)
- 8.33 kHz air band channel reception
- Auto repeater function
General
| Frequency range | Tx | 156.025–157.425 MHz |
|---|---|---|
| Rx | 156.050–163.275 MHz | |
| Rx (CH70) | 156.525 MHz | |
| RX (AIS) | 162.025 MHz | |
| Usable channel groups | INT, USA, CAN, WX channels | |
| Type of emission | 16K0G3E (FM), 16K0G2B (DSC), 16K0GXW (GMSK) | |
| Current drain (at 7.2 V DC) |
TX (6 W/1 W output) | 1500 mA/700 mA (approx.) |
| RX (Inter SP/Exter SP Max. audio) | 700 mA/350 mA (approx.) | |
| Operating temperature range | –20°C to +60°C; –4˚F to +140˚F | |
| Antenna impedance | 50 Ω | |
| Dimensions (W×H×D) (Projections not included) |
60.9 × 145.8 × 43.8 mm; 2.4 × 5.7 × 1.7 in |
|
| Weight (approximately) | 357 g ; 12.6 oz (With BP-306, antenna, MB-133) |
|
Transmitter
| Output power (Hi/Low) | 6 W/1 W | |
|---|---|---|
| Max. frequency deviation | ±5 kHz | |
| Frequency stability | ±10 ppm | |
| Spurious emissions | –68 dBc typical | |
Receiver
| Sensitivity (at 12 dB SINAD) DSC receiver (at 1% BER) AIS receiver (at 20% PER) |
0.25 μV typical –3 dBμ emf typical –107 dBm |
|
|---|---|---|
| Squelch sensitivity (Threshold) | 0.25 μV typical | |
| Adjacent channel selectivity DSC receiver (at 1% BER) AIS receiver (at 20% PER) |
70 dB typical 73 dBμ emf 50 dB typical |
|
| Spurious response DSC receiver (at 1% BER) AIS receiver (at 20% PER) |
70 dB typical 73 dBμ emf 50 dB typical |
|
| Intermodulation DSC receiver (at 1% BER) AIS receiver (at 20% PER) |
70 dB typical 68 dBμ emf 50 dB typical |
|
| Hum and noise | 40 dB | |
| Audio output power (at 10% distortion) |
Internal SP | 1500 mW typical (8 Ω load) |
| External SP | 350 mW typical (8 Ω load) | |
Measurements made in accordance with TIA/EIA-603. All stated specifications are subject to change without notice or obligation.
Applicable U.S. Military Specifications & IP Rating
| Standard | MIL-810 G | |
|---|---|---|
| Method | Procedure | |
| Low Pressure | 500.5 | I, II |
| High Temperature | 501.5 | I, II |
| Low Temperature | 502.5 | I, II |
| Temperature Shock | 503.5 | I-C |
| Solar Radiation | 505.5 | I |
| Rain Blowing/Drip | 506.5 | I, III |
| Humidity | 507.5 | II |
| Salt Fog | 509.5 | – |
| Dust Blowing | 510.5 | I |
| Immersion | 512.5 | I |
| Vibration | 514.6 | I |
| Shock | 516.6 | I, IV |
Also meets equivalent MIL-STD-810-C, -D, -E and -F.
| Ingress Protection Standards | |
|---|---|
| Water | IPX7 (Waterproof protection) |
All stated specifications are subject to change without notice or obligation.
Supplied Accessories
- BP-306 battery pack
- BC-251 battery charger
- AC adapter*
- CP-26 cigarette lighter cable
- MB-133 belt clip
- Antenna
- Hand strap
* May differ depending on version





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