Quoted from KenLayton:Ham radio operators have swap meets called "Hamfests".
Yes we do and if you've never been to one you're missing out.
LOTS of test equipment often pretty cheap. Parts too but not all will be
usable in the pinball hobby. Solder, resistors, transistors, IC and
every tool you can imagine.
Hams, especially olde farts like me are hoarders and cheap so prices are good. I've
even found pins and vids at these swaps over the years.
Steve W6SSP