XPost: rec.radio.shortwave   
   From: bit_bucket@gmx.com   
      
   On 11/12/2011 11:12 PM, Don Pearce wrote:   
   > On Sat, 12 Nov 2011 17:24:02 -0800 (PST), arthrnyork@webtv.net wrote:   
   >   
   >> On Nov 12, 2:44 pm, John Smith  wrote:   
   >>> On 11/11/2011 10:10 PM, RHF wrote:   
   >>>   
   >>>> ...   
   >>>> -wrt- Faraday Cage :   
   >>>> Old Metal {Steel} Garbage Can with a   
   >>>> tight fitting Lid.  -store-holding-   
   >>>> + The Solid State AM/FM/SW Radio   
   >>>> + Plenty of Batteries   
   >>>> -or- Re-Chargeable Batteries and a   
   >>>> Solar Charger   
   >>>   
   >>>> -no-tubes-required- ~ RHF   
   >>>>    .   
   >>>   
   >>> Satellites are withstanding these on an almost daily basis, for years,   
   >>> if not decades ... doesn't seem to be a real problem anymore ...   
   >>> however, laying hands to that technology might be a bit of a different   
   >>> story ... as, while one nation might wants its' own satellites hardened,   
   >>> it certainly doesn't want the enemies ...   
   >>>   
   >>> Regards,   
   >>> JS   
   >>   
   >> As far as I know- none of the satellites are using vacuum tubes .   
   >> That's the reality .   
   >   
   > Dream on. Just about every satellite in the sky uses vacuum tubes. The   
   > TWT (travelling wave tube) is still the way to generate high, reliable   
   > power for space-borne transmitters.   
   >   
   > d   
      
   They would be fools to attempt to boost the weight and fragility of   
   vacuum tubes into space, if they have any other alternative ... high   
   power is easily handled with the modern transistors ... the energy   
   requirements of the heaters is also another no-go ...   
      
   Regards,   
   JS   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)