I have a bunch of old microphones, some which may date back to the 1950s. These were used with old reel to reel tape recorders.
While the were cheap, They look sort of neat. I tried connecting one to the mic input of a modern computer. I got no input.
I figured I could google how to test an "unknown microphone with a scope."
Hah! all I got were ebay listings. Tried looking under the phrases "How to" "Troubleshoot" "identify"
All I get are websites that want to sell me something. The "-" exclusions were getting so long. That I have all but given up.
Problem is that most of these are sealed in bakelite cases whit an RCA plug. I can not open it to see if it is carbon, condenser, magnetic or one of the other types.
I am really surprised there is not a tutorial that explains how to use something like a battery, an a scope to measure and determine the parameters of the mic.
Especially these old cheap tape recorder ones.
Any ideas of where to start?