I use an old speck call and Fearnot Game Call ((fav)........Primos makes one as does Woods Wise.
They all work and pretty cheap at under 15 bucks.
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CEkQFjAC&url=http%3A%2F%2Fwww.amazon.com%2FPrimos-Hunting-Calls-336-Peacock%2Fdp%2FB000H4RP98&ei=4nf0VNCkAYjvoASwuIKIDA&usg=AFQjCNEWv_GHlocpwWrNcO6mn5mSQGT--g&sig2=HMRPLhgLVFR-nfVU9ijfnA
https://www.youtube.com/watch?v=vgcGqeAIl_0
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