Try to find in this maze my message with the above Keywords. Yes you have to have the specific frequencies, and none of the lists on the Internet or that Hulda Clark gives are right. I did those for a year and it didn't work. The frequencies are different in everybody. That being said most bugs are between 900 and 1. So you could just do all of the frequencies making sure you turn the knob to hit each one three times in a row. Slow scrowling does not work, they have a chance to flip frequencies and escape. But without learning muscle testing (ie kinesiology or Touch for Health) you will not be able to get them all, since some will always flip.
P.S..Any machine you build must have at least 50 watts of power.