Hello folks .. apologies for the 'sporadic' inquiry - I pulled the text below ## off a search ... crystal set / OC71 amp ..... Have searched FAR WIDE and ENDLESSLY for this circuit (and the book containing it which I borrowed from a library, ca. 1968) and dutifully returned. If you have any pointers these would be most gratefully received !! I have located a *similar* circuit at http://home.t-online.de/home/gollum/dt.htm mine had one output transformer, 2 OC71s (well, lots were burned in the process) and was constructed on a terminal block .... ah ! the nostalgia ! I shall attempt to mail this message also into discussion group cheers Glenn, GM0KMA Scotland ########### Subject: radio kits From: Adrian Graham (agraham(a)ccat.co.uk) Date: 12/13/00-05:35:01 AM Z students then added a single OC71), then added a finally stage. transistors are hard to place I was him some OC71s. one time Nope - I had (and still have) my Radio Shack crystal radio kit to tinker with, followed by one of the Science Fair electronics kits where you had loads of spring terminals and small jumper wires to build circuits with......I found it the other day and it was dated 1973 :) ____________________________________________________________ Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie