[Elecraft] Normal KPA500 behavior?

[n5ge at n5ge.com]

1) With CW carrier; Temperature rises as I hold down the straight key.
Temerature falls when releasing the key.  While sending CW (dits and dahs)
Temperature rises.  When I release the keyer paddles the temp begins to fall
within about 2 seconds.

2) Same as yours.

Temerature behavior will be different according to you fan speed settings.  I
have mine set at the factory settings. The first stage comes on first and then
escalates as the temperature rises.  I've never heard the fan speed escalate
above 3. 

73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

"Only the white eyes would believe they could cut the top
off a blanket, sew it to the bottom and have a longer
blanket."

-- American Indian comment about Daylight Saving Time --


On Fri, 10 Feb 2012 11:28:10 -0800 (PST), Mike Walsh <ke5akl at yahoo.com> wrote:

>Hi,
>
>My KPA500 does a couple of things that seem a bit odd.  Other KPA owners - do your KPAs also do the following?
>
>1)  When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C.  When I release the key the temperature goes immediately back to the real value.  Lower transmit power levels cause a correspondingly lower drop in displayed temp.  This behavior causes the temp display to bounce around while transmitting CW.
>
>2) When I power down my KPA the fan turns on (as it should) and then the right most POWER LED flashes on an off quickly.  Is that LED flash normal?
>
>Thanks and 73,
>
>Mike - ke5akl