Ever seen the finals for a commercial radio station transmitter. 50,000
watts use a very large glass envelope.

Dave WD9BDZ


harry wrote:
Hi Folks:
A guy at work bought his old guitar amp to get looked at. The
tech said he needed new tubes. (probably really doesn't). However, I
needed to bring in my 833A and said he needed 2 tubes like this!! He
was hysterical!
The tech and I got talking about BIG glass tubes. I was wondering if
anyone knows of a bigger glass tube than 833a , 852 , 861, 4-1000a
etc.
Thanks!
Harry