Not sure about other parts of the world, but here in the USA we have local HAM FEST's that are great fun to visit.
They're usually one or two day events where ham radio and electronics geeks gather to buy and sell all things related to amateur radio - there is ALWAYS a ton of other geeky electronics gear for sale on the cheep. Scopes, power supplies, freq gens and counters, analyzers and all sorts of other test equipment is there, new and used. Lots of vintage tube stuff.
I LOVE it! It's like a flea market for electronics geeks.
Long live the HAM FEST!!
Cheers!
-ohm