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#1
November 13th 11, 01:55 AM
posted to rec.audio.tubes,rec.radio.shortwave
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Building a new shortwave tube radio
wrote in message ... 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 |
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#2
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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#3
November 13th 11, 07:37 AM
posted to rec.audio.tubes,rec.radio.shortwave
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Building a new shortwave tube radio
On 11/12/2011 6:59 PM, wrote:
On Nov 12, 8:55 pm, "Brenda 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?? NASA knows about voltage converters ... Regards, JS |
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#4
November 13th 11, 07:37 AM
posted to rec.audio.tubes,rec.radio.shortwave
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Building a new shortwave tube radio
On 11/12/2011 5:55 PM, Brenda Ann wrote:
wrote in message ... 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 Fact of the matter is, you don't need tubes in space, you already have a much better vacuum than can ever be created on earth ... you simply need the elements ... Regards, JS |
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