If you believe radio kits were as advanced as one could buy "back in the day", I guess you never looked at a HeathKit catalog, they offered all kinds of kits more sophisticated than radios.
In 1980 I got one of these kits for my auto repair shop, and yes, it was quite a challenge to build, but it saved me hours of automotive diagnostic time.
A comparable automotive ignition analyzer scope at the time was thousands of dollars.
In 1980 I got one of these kits for my auto repair shop, and yes, it was quite a challenge to build, but it saved me hours of automotive diagnostic time.
A comparable automotive ignition analyzer scope at the time was thousands of dollars.
Heathkit CO-1015 Oscilloscope Engine Ignition Analyzer Tool
https://www.ebay.com/itm/144853683301?epid=1323946549&hash=i...