Total posts : 45366
I don’t think that either Phil or Keith do part 15 stuff full time or have a large support staff so consider giving them a break on communicating slower than your would like.
Also, here’s my contribution to thread drift.
I once worked for a company where the CEO insisted on increasing production costs by having part numbers sanded off ICs because he wanted to keep the design proprietary. I explained to him that anyone with electronic knowledge could spend a few hours tracing the circuit and would recognize the op amp and comparator ICs from the schematic. He then insisted on potting the entire board and doing so disrupted the high impedance signals in the circuit and the product failed. This was a $50 industrial item where we competed on price and it was a throwaway if it failed so repair and parts were not a factor.