y re wrong b&f receive box is german PIEPS DSP which is runing on 457kHZ freq. is international freq. for avalanche receivers and transmiters, there re several firms, and they have to run on same freq. because alpinists use pieps from different firms. go on B&F web and find freg. and than go on mammut web and find freq. SAME, y can buy for 67pounds all accesories from B&F and than on ebay receiver box, i m gonna get whole B&F package for 220eur
I've spoken to bellman and flint about this for the little bit of money you'll save the guarantee will be void for starters and he