Let's see - lightning is basically a powerful spark. How about a home-made Marconi coherer?
You don't have to go back in time to get one, and the audiophools haven't found a use for it. Bill Hawkins -----Original Message----- From: paul swed Sent: Friday, June 27, 2014 8:10 AM How to make a sub $$ solution. The European solution is several hundred Euros. $$$$ Regards Paul WB8TSL _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.