The Austin PVC open reed calls are hard to use... What I do to make them work easier is you don't hold them in a grip...Just let them lay in your hand with little or no tension on them and they do make good music then...I do have the three different PVC calls.. As you know the wider the reed the harder for you to make it work..IMO I think the Austin calls are not for a beginner..However you have to start sometime... How are you going to learn how to use them if you don't own them?
The KIYI IMO is the same as the coyote distress....The people who sell electronic calls and these sounds just call them by different names..
The higher the pitch that would be a female or young... Deeper pitch of course is the male. Coyote vocal made at the tip of the call are of course the female and pups..Holding you mouth and teeth on the reed 1/2 way in and deeper are the male sounds..
Buy yourself a Crit-R-Call Song Dog open reed call.. It comes with a book that explains about the barks and the wuffs.
You can buy it, the book separate too but that cost $7.50. My as well get an outstanding open reed call with and pay just a bit more..The Song Dog come in Orange for night time calling (if you drop it) or sand color for daytime.. I use the orange in the daytime too.
http://www.critrcall.comhttp://www.critrcall.com/page/1r97q/Products/Books.htmlHere is the link for the book I speak of:
Here is the link for the book and Song Dog: $20.00 you get both!!
http://www.critrcall.com/page/1r8a6/Products/Predator_Calls.html