By default Radio Mobile is using the registry to store settings. The usage of the registry file is toggled by the existance of the file RMW.ini in the program directory where Radio Mobile is located.

When the file RMW.ini file is availabale Radio Mobile will use the configuration file to store it's settings.

Registry key

Radio Mobile configuration keys can be found in the registry at:

HKEY_CURRENT_USER\Software\VB and VBA Program Settings\Radio Mobile\Settings
 
The keys in the registry are the same as used in the configuration file and described at 'Program settings' where each individual key is explained.