Re: collared coyote
WI uses similar collars but they have no external antena, It may be a wire in the band that circles around the animals neck.
And the ones used here are NOT gps, they use way to much battery power thus last for only a short time period.
The thype used hear send out one ping every couple minutes and the researchers either drive or fly where the animal was last located and wait for there reciever to "hear" the ping. This is done once a week until they see an extended period of the same location. then they go in and look for a lost collar or dead animal. Battery life in these collars is typically 2 years and they give off no "death " signal.
If you have the collar some distance away from where the coyote was killed then it is likly they will never find it, If your close to the animals home range, they will likly find it or the battery is dead. either way it was a coyote so no big deal.