We could detect a strong signal 60m away through concrete walls. The tube has about 40 watts applied. All of this power is used to treat the pathogen, not provide a carrier that has no function apart from lighting the tube and causing frequency fatigue. Beyond a few cm the field of all plasma devices changes from near field to far field. The near field is more effective. This is why we recommend having the tube close or even touching.
Source: Spooky Central Q&A