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Showing posts sorted by relevance for query El silbo. Sort by date Show all posts
Showing posts sorted by relevance for query El silbo. Sort by date Show all posts

Saturday, October 24, 2009

"El Silbo": Michael Rainey's Amazing Voice-Powered DSB Transmitter

Oh man, the wizard of the Vermont hobbit hole has really outdone himself this time. Michael Rainey, AA1TJ, has posted a very interesting report on his experiments with voice-powered radio. I was, of course, delighted that he went with DSB. Check it out: http://mjrainey.googlepages.com/elsilbo

I don't mean to seem like I'm taking any credit for this, but I did provide Michael some technical advice on how to increase power output:

Michael: Obviously the Italian elements in the project were of critical importance. Some of them may have escaped your attention. I note that an olive can was involved... For further progress I think you should consider working in some of the other substances that help keep Italy going: cappuccino, Nutela, and perhaps some vino bianco...

Another thing: While you are shouting, be sure to use the proper gesticulations. I recommend that you go Neapolitan here -- they are the best. I'd say that before each CQ, you should put yourself in a Neapolitan frame of mind: imagine that someone has bumped into your car and that you and the other guy are arguing about who is at fault. This should generate at least 20 mW!

In boca a lupo! 73


Tuesday, October 27, 2009

Listen to "El Silbo" Voice-Powered Rig!


Michael, AA1TJ, has had more contacts with his voice-powered DSB rig. (Scroll down a bit for a look at the schematic and more comments on this amazing project.) Michael has posted two recordings of his signal (as received at distant stations). When I played these files, Ubuntu showed one of those semi-psychedelic groovy "visualizer" displays, complete with oscilloscope-like patterns; the signal looked FB Michael!
Have a listen: http://mjrainey.googlepages.com/elsilbo
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