Purchase an H.S. Strut diaphragm called The Raspy Old Hen
. This is by far the easiest diaphragm call I have ever used!!!!
Try to relax....most people try too hard and get all tense. Relax and blow gently....and don't jamb the call to the roof of your mouth with your tongue.
It takes some practice.....but once you figure it out, you will wonder why it was so hard in the first place
They key is being relaxed!!!!