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On 15 Sep 2005 01:27:23 GMT, Steven Swift wrote:
A while back there was a 12v tube thread. I saw this: http://www.thamesandkosmos.com/products/ra/ra2.html advertized in September Scientific American. The ad (on the builditplayit.com site) says it uses a "double triode" and requires 8-AA batteries (nominally 12V). A goolgle for "space charge tubes" will probably turn up a lot of info on low voltage tubes. The Summer 2005 edition of Sprat, the GQRP club magazine, has a circuit for a vfo using a XFY43 hearing aid valve/tube running off 12V. Better stability than a fet oscillator, apparently. -- Cheers, Stan Barr stanb .at. dial .dot. pipex .dot. com (Remove any digits from the addresses when mailing me.) The future was never like this! |
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