Re: new single 833A VTTC and RED plates

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: dhmccauley-at-spacecatlighting-dot-com 

There seems to be a bit of disagreement between many on this list and among
many of the old timers i've met.
I've spoke with a number of old ham guys as well as broadcast transmitter
engineers and technicians and
the general concensus (from them) is that the 833C tubes which have graphite
plates cannot be run "red" as you would say as
they will quickly become damaged at the power levels necessary to make the
graphite plates glow.  However, they say its
normal to run the 833A tubes "glowing red" as its normal for that type of
tube and plate material.

One timer had a silly saying he learned on the job and was happy to share it
with me.

"833As red hot"
"833Cs do not."


Dan




 > Yep, of course he runs it in his room. I run mine in my apartment. Mine
has
 > similar results with one 833A. Steve probably knows that he can replace
the
 > 833A with an 833C and greatly increase the duty cycle. My old 833A would
get
 > red rather rapidly, whereas the 833C shows no sign of heating up.
 >