I have just replaced my Schubeth C4 with SC1-A with an Impulse Helmet.  The radio works perfectly fine on the Schuberth but as soon as I start the bike the radio on the Impulse is impacted by interference that is clearly linked to the speed of the engines the interference increases the higher the revs.  Is there anything I can set to prevent this. Listening to music via bluetooth from my phone is perfectly fine but the FM radio is unusable.