Now a new model has come out...the Professional model...which does more than the Ultimate does. It has more memory for programs and it can treat in 2 new modes which 'pulse' besides the usual Run and Sweep modes. Best feature is it runs all the one million frequencies which takes about 7 hours. The Ultimate doesn't do that. I got mine from rifedigitalmachines.com
They give really good service and answer all your questions. So if you're thinking of getting one, I'd go for the best one which is the Pro model. You can treat so many conditions with these machines, not just 30 Hz frequency! You should get one!

What tools do you use for measuring?

Did you use an oscillator to measure the output frequencies? Because an ordinary meter won't read the correct output. Try measuring with an oscillator. I've used as per the directions which is one treatment every day for 21 days. I actually used it overnight for 21 days. I did experience nausea and fatigue as the die-off happened, but just drank lots of water and it went away. Maybe you don't have roundworms and that's why you don't get die-off. Go for a stool test so you get a proper diagnosis and then you can sellect the right parasite frequency to use. I find the machines work really well when the diagnosis is correct. Don't give up using them. Do better diagnosis would be my advice.

wow! you must have sensitive skin! I've been using the Rife Digital Ultimate and now Pro for over two years for many, many overnight treatments and I never got any burns, marks or any problems at all! In fact, I found the Ultimate healed many of my chronic health issues, like got rid of all parasites, worms, fungi, mold, Candida and the like. Also cleared up chronic fibrosis, ligament knee tear, arthritic joints and a couple of other things I don't remember just now. Also anytime I got a sore throat or cold or flu, I just used my Ultimate overnight on the right frequency set, and I was 100% normal in the morning! So I wonder if you were diagnosing your problem correctly?!? For the price and the power and portability, I'd buy a Rife Digital machine anytime! I have friends who also use the Rife and no one ever got or complained of any burns at all on their feet. So your report does sound a bit unusual/exaggerated. However, glad you found a machine you are happy with! Good luck to you!