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Bobby June 5th 06 05:23 PM

Dissipating High RF Power in Vacuums
 
All,
What methods are commonly used to dissipate high RF power in vacuum
chambers, apart from conduction cooled plates?

Any response is welcomed.

Thanks.

Bobby.


**THE-RFI-EMI-GUY** June 6th 06 04:29 AM

Dissipating High RF Power in Vacuums
 
Heat pipes? Carbon absorbers? Crash test dummies?

Bobby wrote:

All,
What methods are commonly used to dissipate high RF power in vacuum
chambers, apart from conduction cooled plates?

Any response is welcomed.

Thanks.

Bobby.




--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"©

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" ;-P


Fred McKenzie June 6th 06 07:09 PM

Dissipating High RF Power in Vacuums
 
Bobby wrote:

All,
What methods are commonly used to dissipate high RF power in vacuum
chambers, apart from conduction cooled plates?


Bobby-

The only remaining option is radiation.

Fred

Steve N. June 6th 06 07:40 PM

Dissipating High RF Power in Vacuums
 

"Fred McKenzie" wrote in message
...
Bobby wrote:

All,
What methods are commonly used to dissipate high RF power in vacuum
chambers, apart from conduction cooled plates?


Bobby-

The only remaining option is radiation.

Fred


Don't know what's common. Since it is a *chamber* you could "pipe" it out
of the chamber. Perhaps a water cooled jacket to a radiator on the outside,
or Peltier or heat pipe to a chamber wall.
73, Steve, K9DCi



[email protected] June 6th 06 10:20 PM

Dissipating High RF Power in Vacuums
 

Bobby wrote:
All,
What methods are commonly used to dissipate high RF power in vacuum
chambers, apart from conduction cooled plates?

Any response is welcomed.

Thanks.



The only other method is radiation, since you already mentioned
conduction.

Many high power glass vacuum tubes are cooled primarily by infrared
radiation. Tantalum or moly anode power grid tubes like the 4-400 or
3-500 are cooled primarily by infrared radiation and to a much lesser
extent conduction out the metal element supports.

73 Tom


jack June 7th 06 05:35 AM

Dissipating High RF Power in Vacuums
 
Good question to ask NASA




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