Most of the collars I have seen use 167.xxxx and do a low power CW chirp. To pick them up on most commercial equipment you need a CW or SSB mode to turn the carrier into a chirp. By using the chirp and AM it is easier to estimate a distance by ear than an FM signal would be.
Putting the frequency into an FM scanner or even a scanner you can set to AM may give you a static squelch pop if the unit is close enough there would be no tone or any other alert. A communications Receiver would give a chirp but having the static of an open squelch while waiting for the TX to come into range will drive any non-radio crazy people to distraction pretty quickly.
It might also be a bit problematic trying to get the frequency out of the local game management official, they usually don't want their collared critters disturbed and giving the public a way to track said critter probably would not be looked upon too favorably.
Bruce
Bruce
