We often worry about the current or upcoming standards and test methods. Have you ever wondered how testing might have been performed in the past (like 30-40 years ago)? I wrote a blog for Interference Technology describing the way we measured emissions amplitudes back in the 1970s when I worked for the US Navy. You old timers (like me) will remember this. You youngsters might sit back, take a minute or two to read this, and think about what it has to offer today. In any case, I hope you enjoy the bit of nostalgia. https://interferencetechnology.com/substitution-source-measurements/#