RS-MS1I

RS-MS1I

by ICOM INCORPORATED

74 ratings
64 reviews
Free

Details

  • Released
  • Updated
  • March 31, 2017
  • July 17, 2026

Features

RS-MS1I screenshot #1 for iPhone
RS-MS1I screenshot #2 for iPhone
RS-MS1I screenshot #3 for iPhone
RS-MS1I screenshot #4 for iPhone
RS-MS1I screenshot #5 for iPhone
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About

Control compatible transceivers, share voice and pictures, and view station locations on a map. Access received station information, send text messages, and manage call sign and repeater lists. Customize transceiver and application settings for a streamlined experience.

Transceiver DR functions
Send and receive voice and pictures
Map repeater and station locations
Read and edit received station information
Send and receive text messages
Manage call sign and repeater lists
Import/Export data
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+2

What's New in RS

1.40

July 17, 2026

- Supported with ID-5200A/E. - Supported the display of 10 GHz band repeaters. - Fixed a bug where the app would crash when displaying the map screen on devices running iOS 26 or iPadOS 26.

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User reviews

Nice basic app

This app has worked well in the past with my ID-52 but lately it has started crashing when I use the map function to see a station location. Annoying

App crashes on map screen

This app works for everything except when on the map screen. The entire application will crash when looking at the map section. Icom needs to fix this.

Almost perfect. App closes when opening the map and moving about. Annoying!

App closes when opening map! Annoying.

Fails with ID-52A Plus on iPhone 16 and iPad Pro

Update, 2025-06-05. Got further along but still not staying connected to the app. I was mistakingly trying to pair using the iPhone’s Settings: Bluetooth: Pair. However; just using the ID-52A Plus’s Bluetooth pairing function and then pair in the RS-MS1Ii app. It says paired but then a notification on the iPhone says not connected. Tried numerous iterations of settings from YouTubers but no luck. This app, as advertised by Icom for the ID-52A Plus, does not work for my iPhone 16 Pro and iPad Pro. This is the major reason I upgraded from ID-51A. Bluetooth is a very mature and well understood technology and so there is no excuse for Icom to not fix this ongoing problem.
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Fails with ID-52A Plus on iPhone 16 and iPad Pro

Error message on iPhone and iPad: “Connection Unsuccesful “ICOM BT(ID-52)” is not supported” Forget Device?” Bluetooth, as advertised by Icom for the ID-52A Plus does not work for my iPhone 16 Pro and iPad Pro. This is the major reason I upgraded from ID-51A. Bluetooth is a very mature and well understood technology and so there is no excuse for this failure to fix their error(s).
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Developer apps

FAQ

What does the RS-MS1I app do?

The RS-MS1I app allows you to control compatible ICOM transceivers from your mobile device. You can send and receive voice and pictures, view station locations on a map, manage received station information, send text messages, and organize your call sign and repeater lists.

What are the key features of the RS-MS1I app?

Key features include controlling transceiver DR functions, sharing voice and pictures, mapping repeater and station locations, accessing and editing received station data, text messaging, managing call sign and repeater lists, and importing/exporting data.

Is the RS-MS1I app free to use?

Yes, the RS-MS1I application is free to download and use. There are no in-app purchases or advertisements mentioned in the provided description.

What devices are compatible with the RS-MS1I app?

The app requires iOS 12 or later. It is designed to work with specific ICOM transceivers, such as the ID-4100A/E, ID-52A/E, ID-52A PLUS/E PLUS, and IC-705, often requiring an optional Bluetooth unit for connection.

How can I use the RS-MS1I app with my transceiver?

To use the app, you need a supported transceiver and potentially an optional Bluetooth unit. You will also need to configure specific settings on your transceiver, such as enabling 'CI-V Transceive' and setting the 'Serial Port Function' for Bluetooth data.