On Thursday, August 8, 2013 9:45:58 AM UTC-5, dave wrote:
On 08/07/2013 08:15 PM, DhiaDuit wrote:

On Wednesday, August 7, 2013 4:07:02 PM UTC-5, wrote:

On Wednesday, August 7, 2013 2:30:09 PM UTC-4, dave wrote:









Except for high power UHF tubes are obsolete. And they can burn you.







High power radars used vacuum tubes in the past. Don't know if a replacement is in existence, due to such high voltage-pulse-microwave combination. Solid state devices are simply unable to compete in some applications.



I just now did a Google for, Where to buy UHF Vacuum Tubes. Let cho fangers do the walkin.





Try Richardson Electronics. For broadcasting, Thales makes the Klystrode

tubes which achieved analog efficiencies of over 100% in pulsed service

(which analog TV was).



Digital TV uses about 10% of the power of analog, so solid state UHF

transmitters are being used to replace the old 4 tube monsters as analog

goes the way of newspapers and home delivery.

Google,,, dvice.com Holho I likes that. It would be good for bikini photo shoots at Youtube.