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#9
November 13th 11, 02:59 AM
posted to rec.audio.tubes,rec.radio.shortwave
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Building a new shortwave tube radio
On Nov 12, 8:55*pm, "Brenda Ann"
wrote: wrote in ... As far as I know- none of the satellites are using vacuum tubes . That's the reality . ---------------------------------------------------------------------------*----- ---------------------------------------------------------------------------*----- All satellites still use these for output: http://en.wikipedia.org/wiki/Traveling-wave_tube Oh,sorry. But this may be a miniature tube for microwave frequencies . Where do they obtain high voltages - it must be smps type . Solar panels?? |
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