I have an icom box that can track all freq.'s. It is in good working condition. have an amplifier for it as well. OR i have a Magnum 8000 that is less than a year old. Have around 20 telemetry collars to choose from... some just a few months old to dead ones... changeable battery to lightweights to 16k hour ones. Probably have some young dogs i could part with also.