[Elecraft] KPA500 finals blown

[Irwin Darack]

In discussions with Elecraft at Dayton, we should be able to run the KPA500
at 300 watts during a RTTY contest. This would include Running versus S/P.
The fans on mine do come on high and I keep an eye on the temp reading. I
do need to stop occasionally to allow the amp to cool down. I am not sure
if there is a way to add an addition external fan to increase the air flow?

Irwin KD3TB

On Thursday, January 21, 2016, Phil Wheeler <w7ox at socal.rr.com> wrote:

> This in the specs in the KPA500 manual "Duty Cycle at 500 Watts 10 minutes
> key down / 5 minutes standby" seems pretty definitive for normal
> operations, even RTTY, Earl.
>
> 73, Phil W7OX
>
> On 1/21/16 6:44 AM, efortner wrote:
>
>> I would like to know what the continous keydown power output rating is.
>> The
>> manual talks about ICAS. I know when I get on RTTY I does not take long
>> for
>> The fans to come up to full speed running 300 watts.
>>
>> Earl, K4Kay
>>
>> -----Original Message-----
>> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
>> Nand
>> Kishore
>> Sent: Thursday, January 21, 2016 4:29 AM
>> To: elecraft
>> Subject: [Elecraft] KPA500 finals blown
>>
>> KPA500 shut off with a bang while operating RTTY @300W.
>>
>> Antenna is a steppir beam.
>>
>> On opening the KPA500,found 2 ceramic? caps of VRF2933
>> adrift with underside of the said caps,black.
>>
>> Have written to support.Is this the first time this has happened
>> in a KPA500?
>>
>> 73 and HNY,
>> Nandu
>> VU2NKS
>>
>
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-- 
Irwin KD3TB