Im going to order Johnson tracking suff but was wondering is there a diffrence in there boxes. Does one of these have longer range than the other. I was thinking of either merlin 10 or the mn-10 so I was wondering witch one would be the better one.
Then the collars is there a diffrence in them as far as range. Was thinking either the C or the D the only thing is the weight that I see as a diffrence
Thanks
Jim

