Vance Miller's Mystery Crystal Radio
I have been working on a version of the "MYSTERY CRYSTAL RADIO", thanks to you and Dan Petersen it is a finished product that works great. In my area Winston Salem N.C. I can pick up 4 local stations, and at night when my luck is good a distant station will pop up and surprise me. I use a 35 foot antenna about 30 feet off the ground with good results.
The coil is wound on a 3 1/8 diameter by 2 1/8 inches long with a coat of clear sealer and paint. The coil was wound like the original using 50 turns of # 24 copper wire and 25 turns of # 30 for the secondary. I was able to locate a 500 pf variable capacitor to go across the primary coil. Very soon I hope to add a cat whisker detector stand.
I have enjoyed building this radio and the performance was well worth it. Thank you for giving me the opportunity to display it on your web site.
Unfortunately Vance is no longer with us. I enjoyed our friendly e-mails.