Not so much a mistake as merely a holdover from the days when mF was in fact the conventional abbreviation for microfarad,
I have handbooks dating back to 1925 and they use ? as the abbreviation for 10-3, but some still prefer Jars for capacitance! I is possible that it is a US v UK thing, or just widespread incorrect usage.
Never heard any reference to the expression "mickey-mike".
73
Jeff G8HUL
