Hello, Ray!
Thank you for your good wishes! I'm blessed to have a practitioner (my PT) who can program the unit to address my particular needs. This technical stuff is way beyond my wheelhouse.

It is not surprising that there will always be some sort of long-term issue with your immune system. It's amazing how interconnected our body systems are. After my hip replacement due to a break from a fall, I found out I'd have to take Amoxicillin every time I visited the dentist - forever!- even if just for a cleaning. Seems the bacteria in the mouth can trigger an infection in the post-surgical hip, if it enters the blood stream and travels to that area. Who knew?? Grrrr!

Anyway, one thing I didn't share in my answer to BettyG, was another main factor in the decision to invest in this, versus the L39 patch or a deep-tissue red light. The class 1V red light is waaayyy too expensive ($50,000.), and the patches would be an investment that is gone when I die. But the BEMER is something that I can pass on to whichever of my kids wants it, or maybe they could share it if they so decide. It just seemed a more thoughtful option. And who can't use an enhanced delivery of oxygen and nutrients through the small veins and capillaries that have become incapacitated as our bodies age?

Since you had expressed a curiosity, I thought I'd add these thoughts.
Have a super Sunday and stay safe and well ~
Barb