Just now saw this thread and had to reply.
I've had a dehydrator for many years and have used it a lot. I don't remember the brand; it's just a cheap Walmart type with round trays but it works very well even after all these years.
I've made jerky a few different ways but finally came to realize that the best way (to me anyway) is to get the leanest hamburger I can find and roll it out thin with a rolling pin. I mix in various herbs and spices, and never kept notes because I found out early on that as long as I use the right amount of salt and don't overdo the cayenne it's good.
I've dried tomatoes, sliced thin. Spray them with a little olive oil and season them with a little salt (very little; since they shrink so much it's easy to overdo it), garlic powder, chili powder; I've even used curry powder. If you leave them on until they're crunchy they're good but some people like them leathery, which takes quite a few hours less.
The other things I do with tomatoes is dry them with no oil or seasoning until they are crunchy, then turn them into powder in a food processor. They keep forever like that and you can mix it in with soups and stews or use as a thickener; it's the next step beyond tomato paste.
I've made Kale chips on the dryer, seasoning them the way I season tomato chips. I've also dried Kale, Collards, Swiss Chard, and Mustard greens, and turned them into powder by running them through a screen. They keep forever and are good in a smoothie. A tablespoon of powder is roughly equal to a leaf the size of a dinner plate.
I dry cayenne and pulverize it in a food processor then run it through a screen to get the seeds out and it keeps forever. I've done the same thing with habaneros.
This is one of the best ways to preserve food because the biggest part of the food's volume is usually water, so what you store takes up very little space. As long as it's completely dry and stays dry I've had things for a few years with no sign of them going bad. And this method does a good job of preserving the food's nutrition.