07-27-2002, 10:36 AM
Its been a bazillion years since I did crystal sets, but we did this when I was a kid and I can't remember how I did it. (I'm 62 now.) What I'm looking for is a tunable crystal set circuit (760 kcs) that will power a one volt range meter. I think there may have been a CK722 transister in there somewhere. (Does that date me or what? A CK 722!) Anyway, the purpose of this circuit is to measure modulation and field strength from my AM 25 close to the antenna. Any takers? Alternate suggestions for doing this are welcome.