[AMRadio] Crystal Mics - What's-what and how-to [newbie]

[Zengmeiste at aol.com]

 OK, so I guess I don't know the difference between a D104 and 
 anything else, please enlighten me!  I do have a T-3 (it's 
 roughly egg-shaped?) that may work; how would you test it, 
 the PTT stand and cable for kosherness (that's a technical term...)
 withOUT using an xcvr/xmtr? Any old audio amp do, with proper
 attachment, or would I need to buy, build, steal, borrow a 
 some kinda spectrum analyzer or scope?

 Thanks!
 
   73, Terry Bakowski KC9KEL

ps
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