Functional overview of the application
DR functions
You can use some transceiver’s DR functions.

Share pictures
Send and receive voice and pictures.

See the location of repeater sites or other stations on a map using received position data, or your
transceiver’s repeater list.
Automatically set the transceiver’s “FROM” and “TO” fields by tapping a repeater site or a station
on the map.

Receive History
In the DV mode, read and edit the received station’s information.
Download additional information from an Internet database, such as or

Text messaging
Send and receive text messages.

Call Sign list
Edit call signs and names used in the DR function. Also, you can add a call sign and a name in the
Call Sign list.

Repeater list
See the detailed data entered in the Repeater list.

Transceiver settings
Change some of the transceiver’s function settings.

Application settings
Select application software settings.

Import a Repeater list or a Call Sign list.

Export a Repeater list, a Call Sign list, or Receive History.

See the transceiver’s instruction manual for details. The instruction manual can be downloaded from the ICOM web site.

Device requirements
The RS-MS1I operating requirements are as follows:
iOS 8.0.1 or later

Compatible transceivers
- ID-4100A/E + Bluetooth unit (UT-137) (as of April 2017)

To use the RS-MS1I with a supported transceiver, you need an optional Bluetooth unit. See your transceiver’s instruction manual for details.

Transceiver’s settings
Set the following functions as shown below to use the RS-MS1I.
[Function] > [CI-V] > [CI-V Transceive]: ON
[Bluetooth Set] > [Data Device Set] > [Serial Port Function]: CI-V (Echo back OFF)

- The RS-MS1I may not work with all iPhones or iPads, even if they are one of the tested devices. This is because an application program on your device may conflict with the RS-MS1I.
- The RS-MS1I may not be used, depending on the OS version, installed application, and so on.
- Bluetooth LE is used for the connection with the transceiver, so there may be a time delay between the transceiver’s operation and the display on the iPhone or iPad.
- When sending or receiving pictures using “FAST mode,” the headset audio will be temporarily interrupted because of the transceiver’s Bluetooth unit limitations.
- You may need to connect to the Internet through a Wireless LAN, a 3G network or an LTE network for some functions.
- The RS-MS1I supports only portrait orientation with the iPhone. It does not support Auto Rotate. However, landscape orientation and Auto Rotate are supported with the iPad.

What's New

Version 1.01

Fixed an error where the FM repeater name stay displayed in the [FROM] field of the RS-MS1I,when the VFO mode is selected on the transceiver using the [DR] function.
Fixed an error where the item name “Latitude and Longitude unit” was displayed as “Latitude and,” on the application setting screen.
Fixed an error where the tapped screen area on the [DR] screen did not change color, as intended.

Ratings and Reviews

1.6 out of 5

9 Ratings

9 Ratings

Useless unless you have a 4100


I was so excited when I saw this software. I spent a lot of money on a 5100. Installed the software and linked my 5100 only to find out that it only works with the 4100. Why doesn't Icom support their older products. I spent extra money to pay for Bluetooth in my 5100 only to find out it doesn't work with IOS. Half of the people in the world use apple devices. Useless.

Wake up ICOM!


There is nothing in the description that says only for the ID-4100, After an hour of fighting trying to set this up I found in another rating that someone else took the time to rate it with the same problem, It does not work with the ID-5100. How about adding support for the other Icom radios that have DSTAR capabilities!

Doesn’t support 5100


Ridiculous that this doesn't work on the ic-5100


34.4 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad Wi-Fi (3rd generation), iPad Wi‑Fi + Cellular (3rd generation), iPad Wi-Fi (4th generation), iPad Wi-Fi + Cellular (4th generation), iPad mini Wi-Fi, iPad mini Wi-Fi + Cellular, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad (5th generation), iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro (2nd generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro, 10.5-inch iPad Pro Wi‑Fi + Cellular, and iPod touch.
English, Japanese
Age Rating
Rated 4+
© 2017 icom inc.


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