RS-MS1A D-STAR android software

Android app RS-MS1A with D-Star radios IC-2820, IC-92, ID-51, ID-5100) with the serial cable 

As of version of the 1.1 Icom app RS-MS1A it becomes possible to use it jointly with one of the "older" radio via serial cable.

The "data chain" to create it's not overcomplicated, but it can imply a bit of luck in finding the right components:

  • Telephone or tablet :
    it must be an "android 4.x" with  USB OTG (Usb On the Go) support. this is a key aspect to make it work with the serial adapter.

  • Cable to connect the phone to the serial adapter
    it MUST be an"USB OTG" cable cheaper USB reduction from USB A to mini USB DO NOT WORK WITH OTG .

  • USB-TO Serial adapater:
    it shall be a model recognized by the phone/tablet. sometimes different adpaters works with different phones -- it can be the same one you use with d-rats

  • reduction cable compatible with your radio - lately it's a female-serial to mini jack (2.5mm) like the one you use with d-rats

How to use it

  1. first of all... read the manual of the app and of your radio
  2. configure the radio as you would do for d.rats (you can test it with d.rats and pc)
  3. install the android RS-MS1A app from the app store
  4. connect the serial adapter  to the phone using the otg cable. the phone will promt you to launch an app... select the RS-MS1A -- if this doesnt happen:
  • feel lucky
  • try with a different OTG adapter
  • check that it all works with d-rats and pc
  • try with different serial adapter
  • try with different phone
once the app loads and gives no error of "no radio"
  1. open the RS-MS1A app and select "other radio"
  2. be sure to insert "mycall" and "your call" in the proper fields otherwise it will not work.


IC-92: data speed to be set at 9200 bps

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