I'm using a Foxpro CS24B with a TX500 remote, I wish it reached out further, I think 100 yards is advertised distance it but I'm having trouble at 50 yards getting the buttons to work.
It could be the batteries but I seem to have lost some range although its hard to tell, I've been setting the caller on the ground, a tripod or up in a tree works better for range and sound projection, but lately I've been playing with muffling the noises back a little, calling softer and hiding the caller more in the brush trying to sound more natural.
My next one I'd like to find one that would travel at least 1/2 mile or even 1 mile, it would sure be nice to sit way back downwind of it and get the coyotes (mostly wolves for the long long range) to still be in front when they circle behind the ecaller.
I would sit way downwind on a vantage point covering a whole drainage and would want the animals to pass in front of me, still upwind of me but downwind of the ecaller.