I already have brand new set of Trashbreaker 6 collar system but concerned mostly with other collar interfernce. I don't field trial (not right now anyway) but several hunting with us have the Astro 320 and i was wondering about collar interference.
You can set a pin code on the DC 40's that should stop the interference and I'm sure wh the Alpha they currently are not having as much interference but there's not as many callers out there yet either but I'm sure there's also a way to stop it with the alphas such as a pin