can someone help me about the schematic diagram of an am radio receiver transistor based and the description of its components

 

Google is your friend.

Clicky:
http://www.google.com/search?hl=en&q=transistor+AM+radio+receiver+schematic

 

Also try a search on the exact phrase "seven transistor radio."

 

Wonder if "5 tube radio" wil still bring up a response?

 

Yep.

I still have a copy of RCA's receiving tube manual, dated 1970.

And here the spousal unit claims I collect useless stuff.

 

226 results at google for "5 tube superhet"