> I am using a 3CX1200A7 and I wonder if anyone knows the safe operating
> temps of this tube at idle and under load. I have a Fluke temp meter
> that is accurate and shows 120f at idle and 230f at 1.5-2k output into
> a load. Any comments
>
> Randy
The exhaust temperature has nothing to do with the tube temperature
Randy.
The seals are rated at 250 degrees C maximum.
That could occur with 0 degree air temp on the exhaust of a PA,
or 500 degrees C. You are too far downstream to estimate the seal
temps.
What you need to measure are the seals, and I would use a
temperature indicating crayon or paint to do so. The Fuke would
be a shock hazard.
73, Tom W8JI
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