[time-nuts] beryllium oxide

[Dr. David Kirkby]

Dr. David Kirkby wrote:
> Marco IK1ODO wrote:
>> Robert,
>>
>>> Some power tubesmay use it internally.
>>
>> As far as I know, from many discussions with power tube manufacturers, 
>> no power tube uses beryllia, except for that conduction-cooled Eimac 
>> tubes. It's simply not needed.
>> Other tubes (not power ones) may be different, but I never heard of 
>> any beryllia in them.
>>
>> Marco IK1ODO / AI4YF
> 
> I believe some of the bases for the conduction cooled tubes use BeO too. 
> I might be wrong on this. I have a few sitting in the garage somewhere.
> 
> I doubt there is any point having it inside air/water/vapor cooled tubes


Sorry, just realised I replied to something written ages  ago.