[Elecraft] Normal KPA500 behavior?

[Fred Jensen]

1.  Key down [or RTTY TX], mine rises, fan steps up, temp stabilizes.
When I unkey, temp begins to fall.  Sending CW, temp may fall a deg or 
so when I first send, then it rises.  It usually rises another deg or so
after I stop sending before falling again.  I figure it's "thermal
inertia" for the PA heat to propagate to the sensor.

2.  The 700 LED flashes once during the fan power-down cycle.

3.  Tapping AUX QSY's the K3 to 10m.  Don't know why, but I won't tap 
AUX again and it won't be a problem.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

> 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
>
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