RS-MS3I1.1.2 - App Store
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Publisher Description
[Features]
The RS-MS3I is an iPhone or iPad application designed to expand the DV mode capability of a D-STAR transceiver using a Terminal or an Access Point mode.
These modes enable D-STAR operations by sending signals from the D-STAR transceiver over the Internet, even when that transceiver is out of the range of a D-STAR repeater. The transceiver sends your voice signals using an Internet, LTE, or 5G network, through an iPhone or iPad.
1. Terminal mode
By operating the D-STAR transceiver through the iPhone or iPad, you can contact other D-STAR transceivers.
In the Terminal mode, the transceiver will not transmit an RF signal, even if [PTT] is held down, because the microphone audio signal is transmitted through an Internet, LTE, or 5G network.
2. Access Point mode
In this mode, the D-STAR transceiver functions as a Wireless LAN access point.
The D-STAR transceiver repeats the received signal from the iPhone or iPad, to other D-STAR transceivers.
Refer to the instruction manual (PDF) for setting details. The instruction manual can be downloaded from the ICOM website.
(URL: https://www.icomjapan.com/support/manual/)
[Device requirements]
iOS15 or later
[Usable transceivers] (As of March 2026)
- ID-52A PLUS or ID-52E PLUS
Note:
- This application operates on iPhone or iPad as a gateway server on the D-STAR system. Therefore, a public IP address must be set on either the iPhone, iPad, or the Wireless LAN router.
- Ask your mobile carrier or ISP for a public IP address. According to the contract, communication charges and/or communication packet limits may occur.
- Ask your mobile carrier, ISP, or manufacturer of your iPhone, iPad, or router about public IP setting details.
- Icom does not guarantee that the RS-MS3I works on all iPhone and iPad. It may not work properly, depending on the OS version, installed applications, or other reasons.
- When a Bluetooth headset is connected to the transceiver, depending on the combination of your iPhone or iPad and the Bluetooth headset, sound may be interrupted, and communication may not be possible. In such cases, please disconnect the Bluetooth headset before use.
- Turn OFF the Wireless LAN function when communicating through an LTE or 5G network.
- Operate your transceiver with the RS-MS3I in compliance with appropriate regulations.
- Icom recommends that you operate them with a club station license.
Version History - Change the default value for the UDP Hole Punch setting to ON (when the Region setting is set to Japan) 1.1.2 Apr 2 - Fixed a bug where it did not function properly on some telecommunications carrier lines in iOS 26s. 1.1.1 11/05/2025 - Improved the standby operation in an environment where no global IP address is assigned (when the Gateway Type is Japan) 1.1.0 08/21/2025 - Fixed a bug that sometimes causes a communication start error. 1.0.1 12/20/2024 1.0.0 11/22/2024
About RS-MS3I
The company that develops RS-MS3I is ICOM INCORPORATED. The latest version released by its developer is 1.1.2.
To install RS-MS3I on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-14 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the RS-MS3I as malware if the download link is broken.
How to install RS-MS3I on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the RS-MS3I is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After RS-MS3I is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 1.1.2
posted on 2026-10-14
Version History - Change the default value for the UDP Hole Punch setting to ON (when the Region setting is set to Japan) 1.1.2 Apr 2 - Fixed a bug where it did not function properly on some telecommunications carrier lines in iOS 26s. 1.1.1 11/05/2025 - Improved the standby operation in an environment where no global IP address is assigned (when the Gateway Type is Japan) 1.1.0 08/21/2025 - Fixed a bug that sometimes causes a communication start error. 1.0.1 12/20/2024 1.0.0 11/22/2024
version 1.1.1
posted on 2025-11-05
- Fixed a bug where it did not function properly on some telecommunications carrier lines in iOS 26s.
Disclaimer
Official App Store Link
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