bingo op error :-/ (why am I not surprised?)
room temp was 27.7 *C* not *F*
although it had actually been 20F outside earlier that morning
Also, thanks for the calibration tip for the PA & FP temps
I found they were both many degrees higher than actual room temp
sm
On 11/14/2013 10:56 AM, Paul Kirley wrote:
Sam K5OAI sed:
room temp 27.7 F
Unless the room is in an igloo, he probably meant 27.7C = 82F.
Good temperature benchmarks to keep in mind are:
(a) 20C = 68F is "normal" room temperature; and
(b) 37C = 98.6F is "normal" body temperature.
Naturally, the K3 temperatures will be higher than the ambient
temperature, as the K3 dissipates part of the energy coming into it
from the PS.
The K3's PA fans are designed to run unless the PA temperature is 36C
or less, so the PA temperature will tend toward 36C unless the room is
cool. In a warm room, 36C is a pretty normal PA temperature reading.
In a warm room there *may* be nothing wrong with an FP temperature of
41C after much idling. With a receive current drain of 1.5A, the K3 is
dissipating 20W continuously. Of course, the PA fans don't directly
cool the front panel.
Have the Front Panel Temperature Sensor and PA Temperature Sensor
calibrations been performed as detailed in the K3 Owner's Manual?
73,
Paul W8TM
--
GB & 73
K5OAI
Sam Morgan
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