Remove all the tech and falderal, it's 6,500 years ago, or your tilting fresh prime to the lock as you've tucked yourself into the rootwad of a toppled oak in anticipation of your answered yelps. The hair raises on the back of your neck and your heart pounds faster as the huge tom roars just out of sight. As far as calls go, aside from the high tech materials there has been no new design since the 1790's. The four basic types of calls are friction, voice, suction, and diaphragm. It requires time and practise to become proficient with the wingbone, even more with the cherry leaf or natural voice, even the slate and box type calls hold enough challenge. The old calls work very well on today's turkey, because the greatest secrets of calling turkey gobblers are simply believing that you can, and making the right sound at the right time. Not as many would like you to believe a perfect imitation of turkey vocals.
Remember in following the footsteps of Adair, or Bartram, Mark Baker's "Natural Man", the wild turkey lives in the forest 365 days a year, all its life truly a child of the forest. A hunter of such a creature should try to learn as much about its life history as he can. Make sure your fowler is up to the task. The 18th century hunter could expect many shots as he pursued huge flocks of birds year around, today you may only have one the whole short season. Make it count, for your sake and the bird's.