Roberts Radio ColourStream User Manual

Dynamic Range Control (also known as DRC) can make quieter sounds 
easier to hear when your radio is used in a noisy environment by reducing 
the dynamic range of the audio signal. 

From the DAB menu list select DRC to enter the DRC adjustment mode. 
The current DRC setting will be highlighted on the screen.

Touch the required DRC setting the display will return to the previous 
screen.

'DRC Off' - DRC is switched off, Broadcast DRC will be ignored.

'DRC high' - DRC is set as sent by broadcaster.

'DRC low' - DRC level is set to 1/2 that sent by broadcaster.

Note: Not all DAB broadcasts use the DRC function. If the broadcast 
does not provide DRC information, then the DRC setting in the radio will 
have no effect.

If you move to a different part of the country, some of the stations which 
were listed may no longer be available. Also, from time to time, some DAB 
services may stop broadcasting, or may change location or frequency. 
Stations which cannot be found, or which have not been received for 
a very long time are shown in the station list with a question mark. The 
Prune stations function will delete the marked DAB stations from your 
station list.

From the DAB Menu list select Prune invalid stations to cause the invalid 
stations names to be removed from the list.