[Elecraft] How hot is too hot

Wed Nov 6 10:05:01 2002

Sounds like a rule of finger to me.

best,

dave

--On Wednesday, November 6, 2002 1:44 AM -0600 Tom Hammond N=D8SS=20
<[email protected]> wrote:

>
>> I got the KPA100 running with only minor troubleshooting, and it seems
>> to be running like a champ. Gave it a good workout in SS last weekend.
>> But can't find anything on how hot is too hot on the heat sink.
>>
>> If I wait for fan to come on (whether set on normal or low/high) it =
seems
>> like the sink gets pretty warm to the touch before the fan kicks in. The
>> fan seems to cool it, hold down heat well. So for the contest I just
>> switched it to High fan and let it run.
>>
>> But tonight in a casual QSO, top was hot again before fan kicked in. Is
>> this normal, or should I be checking things twice?
>
> As I recall, general rule of thumb:
>
>    If you can place your hand (finger) on the heatsink and leave
>    it there for 5-6 seconds without screaming, it's getting 'warm'.
>
> 73,
>
> Tom  N0SS
>
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----------------------------------
David A. Belsley
Professor of Economics