User Manual

You may want to update the FM station transmission. By default the library transmits on 102.3MHz FM, but that might

be 'taken' in your area.

Find this line

#define FMSTATION 10230 // 10230 == 102.30 MHz

And change it to an unused frequency. This number is in 10KHz so for example 88.1MHz is written as 8810

Upload it to your Arduino and open up the Serial console at 9600 baud