Does anyone have a good source for information on how to really use a trumpet turkey call well?  I have viewed all the videos I can find on youtube and none really seems to break down how to make the sounds, only videos of guys calling with that type of call.  I can make the basic sounds on a wingbone call, but have been wanting to get a trumpet call to try as well.  Some of the sounds these guys make with this type of call are unbelievable!

Am unable to provide you with any viable resources.

A key is to learn how to draw air vs. sucking.
Sucking may be reserved for clucking, cutting and cackling.

http://youtu.be/h9xqrwAGYmU

Lefty, try this link. Del is really good and does a good job with his explanations. The secret to using a trumpet is LOTS of practice.As friend says...drawing and not sucking...drawing in air from the diaphragm. Back pressure is also critical...by that I mean partially closing off the hole on the bell end with your fingers to get the tone you are seeking. This video explains better than I can with words.

Using a trumpet call is done the same way as a wing bone. I use alot of Fred Cox's calls and love them.

I requires alot of practice, but I like to refer to it as kissing the call. You will have to find the right place on your lips that gives you the best pressure, as well as the best angle in which to hold the call. The way in whick you cup you hands will greatly effect the pitch as well.

The above link is a good one, but you will really just need to practice practice practice. Everyone is different when it comes to these calls so you will just have to find your nitch.