No, I don't think that is normal variation.  72C is 162F.   I think that is
too high and reflects something else.  You would be well served to chase
that down.

Are your fans running at max at that temp? Do the fans blow out to the rear
or pull air in? What is your supply voltage showing on DISP under full
load.  Have you done the temperature calibration per the manual, and the
power calibration.  (One soul due to an error was putting out 110 when he
was set to 60.  He too was getting over temps besides his power woes of only
going up to an indicated 90 watts.)

73, Guy.

On Thu, Sep 23, 2010 at 5:28 PM, Joe Planisky <[email protected]> wrote:

> There seems to be some variation in this.  I often run around 70W and the
> temp usually tops out around 60 - 65C.  It's gone as high as 72C on a warm
> day.
>
> 73
> --
> Joe KB8AP
>
>
> On Sep 23, 2010, at 1:03 PM, Guy Olinger K2AV wrote:
>
>  ...
>>
>> some of us have done the brick on key thing at 110 watts for a long time,
>> and watched the temp level out in the 50's.  Fan comes on, goes to high,
>> and
>> blows a lot of reasonably warm air out.
>> ...
>>
>
>  73, Guy.
>>
>> On Thu, Sep 23, 2010 at 3:10 PM, Mark n2qt <[email protected]> wrote:
>>
>>  I've become a firm believer in air flow during rtty contests....
>>>
>>> Mark n2qt
>>>
>>>
>>>> NR4C wrote:
>>>>
>>>>  Now, one more. How much power can I safely use with FSK? I have made
>>>>> several contacts so far at about 50 watts. Can I use more?
>>>>>
>>>>
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