Hey mauser go towww.varmintals.comlook up el cheapo. It's a homade caller he gives directions on how to make it. Plus he gives you free sounds and sound loops. The most expensive thing is the mp3 or CD player. But if you have and old one laying around your half way there. It's really simple to make. Give it a look a see what you think. I made one a while back here's a pic.