[Elecraft] KPA 500

[Andy Durbin]

"After transmitting at 200W the temperature slowly 
rises above 60 degrees C, but the fan doesn't cut in. Does anyone know 
if this is normal behavior and what temperatures I should expect to see?"

Nominal temperature for start of fan speed 1 is 50 deg C although my data for one test run showed several seconds at 50 deg C and fan not running.  It started running just before the temperature rose to 51 deg C.

60 deg C with fan not running is not normal.  60 deg C is the nominal temperature for start of fan speed 3.

73,
Andy, k3wyc