What is the difference between the output of a contact or pad type instrument and the output of the Ray Tube?
. Contact or pad type instruments deliver frequencies through contact, while Ray Tube Instruments transmit frequencies indirectly through the air. Direct contact is a substantial more powerful and accurate than indirect contact. The Ray tube is terribly inefficient, and being an indirect contact devise, requires much more power at the higher frequencies to deliver it’s output.
Contact or “pad” type instruments deliver frequencies through direct contact, while Ray Tube Instruments transmit frequencies indirectly through the air. Direct contact is a substantially more powerful and accurate than indirect contact. The ray tube is terribly inefficient, and being an indirect contact device, requires much more power at the higher frequencies to deliver it’s output. In other words, it requires more power to drive these higher frequencies (in the megahertz range) to be effective. Direct contact instruments such as the GB-4000 do not have this problem.
