Updated Using the software (markdown)

Using-the-software.md

@@ -38,8 +38,8 @@ Below we put all available entries that you can change with a short explanation.
 - **Theme** - choose UI theme
 - **About software** - some information about authors of the code
 - **Power options** -
-- **FM default stepsize** -
+- **FM default stepsize** - you can choose between 50 kHz or 100 kHz stepsize on FM band
 - **Screensaver** -
 - **AM RF Level offset** -
-- **Signalmeter unit** -
+- **Signalmeter unit** - select unit that is used to measure signal level of current station that you are tuned into
 - **Use AF** - use RDS AF (Alternative Frequencies) function to search and switch to better quality frequency of the radiostation you are already tuned into