Have just got hold of a cheap and workable set of 2way radio's and helmit mounted flat ear speaker. which is good. Paid only £60 for 2 hand sets and 2 headsets with the promo that Maplins are running, should cost £100 but £30 per bike it for nothing. Great at speeds upto 40mph after that its a bit harder to hear and around 90mph its a no go. but what do you exspect for that kind of money. Good, Cheap and workable what more can I say.
Radios are: Cobra MT525-2 - 8 channel 38 tones.
In Helmit: Bike 2 Bike Communication Headset. Comes with waterproof PTT button for the handle bars.
The PTT button is the only bit that I donk like, Have to find a better way to mount it.