I have an older American Harvester I got at Walmart. It's not heat adjustable, but I've tested it, and it runs at 160F. I have another brand that runs cooler, and it takes forever. It's going on Craigslist soon. I just ordered a second American Harvester adjustable one from Walmart.
I put my marinated jerky meat in it at around 9 PM and pull it out about 5 AM before I go to work. My garage sure smells good all night.
After the jerky is dried, I cold smoke it for about 3 hrs, using the tin can and soldering pencil with smoking sawdust or chips. I guess you could get a smoke pistol or whatever, but the cheapo rig works great.
BTW: for food safety's sake, I highly recommend that you use Morton Tender Quick in their recommended amounts for the salt in your marinade. Even tho the dehydrator runs at 160F, the meat is going to be in the USDA specified "danger zone" of 40F to 140F for a period of time while it is drying.http://www.fsis.usda.gov/Factsheets/...Food/index.asp
Avoid creating those nasty buggies that could make you sick.