Good luck trying to fix a treadmill. Nothing worked on my Vitamaster 8720. Also, 100 watts of RF on 15 meters will stop that treadmill instantly, creating a dangerous situation for the person treading, especially with 30 wpm cw! I finally bought some aerobics DVD's for the xyl to use on contest weekends. Dave Hachadorian, K6LL Yuma, AZ .