As a non-engineer (of any type) like other nano-users, the simple mission was to wind some coax or wire around a ferrite donut installed on our OCFD and stop the nasty, dreaded, feared, sneaky and often discussed common mode current from creating shack mayhem.
The intended process? Copy the designs of others and validate with our nanos.
The actual process: sink into a putrid pit of RF theory, irreconcilable contradictions, arcania, mystery with misery, and a odd desire to plunge an ice pick in our eye because it would feel better than trying to understand how to (a) build a CMC and (b) measure our newly minted CM choke effectiveness over the lowly average ham bands (say 80-10m) with our beloved nanos.
I, and others, read and study Dave's (W0LEV)'s work like Orthodox study the Talmud - every letter, every grouping of words, even the space between words, has intense meaning to the lost, abandoned and hopeless neophytes.
All this is to say thank you Dave, and others. Your work is light to sheep lost in inky blackness.
My favorite professor would say at the end of every lecture to a class clearly dazed, befuddled and confused: ..."okay, clear as mud?" Followed by "Good, see you next week!"
Don
Km4udx
Don - KM4UDX