Elec. predator call & tips

[351 WINCHESTER]

I am looking for a remote controlled predator call. Since the bucks are nocturnal I want to hunt for some bobcats and coyotes. I called in a young bob this afternoon with a mouth call, but we legally can't shoot them until tomorrow. No big deal as it was not a big tom.

I'm open to sugguestions and need all the pointers I can get.