tag:blogger.com,1999:blog-1272688866536964117.post2108610470450476649..comments2024-03-27T11:12:16.999-07:00Comments on Backspace does not erase: High impedance vintage headphonesRobertGhttp://www.blogger.com/profile/01841652527282627317noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-1272688866536964117.post-33209455414463302992018-12-23T02:05:33.221-08:002018-12-23T02:05:33.221-08:00Tnx; it was very rewarding to hear the fixed phone...Tnx; it was very rewarding to hear the fixed phones :)<br />Before trying with an actual Galena, I think I'll try to get things working with a suitable packaged diode first. Had a look around at old crystal sets, but these seem to have soared even higher than nice typewriters! Will probably have a go at constructing one (my understanding of electrics is 'rudimentary', but should be ok for 1920s stuff ;-)RobertGhttps://www.blogger.com/profile/01841652527282627317noreply@blogger.comtag:blogger.com,1999:blog-1272688866536964117.post-80942593164407427242018-12-21T21:39:36.104-08:002018-12-21T21:39:36.104-08:00That's some nice fixin' for your 'phon...That's some nice fixin' for your 'phones. Hope you find a nice crystal set to listen to (:Tedhttps://www.blogger.com/profile/16774432656602082311noreply@blogger.comtag:blogger.com,1999:blog-1272688866536964117.post-9756191295010883852018-12-21T13:49:58.385-08:002018-12-21T13:49:58.385-08:00Great work on the headsets. I've gotten quite ...Great work on the headsets. I've gotten quite a few of those over my years of playing radio. Really good ones do not even need a battery; just short the wires together, and if you hear a click you've got a set of working Hi-Z headphones. If you want a real challenge make a Gillette Blue Blade radio with a safety pin for the cat whisker and (if you can find the wax paper & foil gum wrappers to wind your own capacitor, and make a razor blade crystal set like the prisoners in the war. Then there is Galena and a cat whisker or the modern way with a 1N32A or other RF diode.Bill Mhttps://www.blogger.com/profile/14649212489891769390noreply@blogger.com