Has anyone found a decent cheap temperature sensor/guage (perhaps even at
harbor freight, etc) that you could place at a specified location in the
exhaust airstream of the tubes, of various amps to see and record what is
"normal" temp ranges? Maybe the brain trust here, could search out a standard,
cheap temp measurement sensor (some DVMs have them) and do some testing and
publishing of expected exhaust air temps of various amps in various modes, like
Low duty cycle (SSB), medium (CW) or high (RTTY)
If the sensor was IR optical you could also watch temps on transforer cores,
with use, and get a database going, on what is "normal". Or what Manufacturer
is really pushing the heat limits on their products.
A muffin fan on the top (sucking, straight above the chimneys) of a Drake L-4B
in heavy duty contest mode REALLY cools the cabinet, and might do some
effective coolings of the critical innards. Same thing with a muffin fan on the
perforated cover of the L-4B Power supply....but I dont know if that really
cools the transformer core very much.
Best Regards,
73, de Pat Barthelow AA6EG
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