[Elecraft] KPA500 - Full Power Keydown

[Mike K2MK]

Hi Johnny,

Here is my experience and my opinion.

Yes you can run the KPA500 in a RTTY contest at 500 watts calling CQ and
working stations hour after hour. I've done it and it works just fine. The
fan automatically increases speed as necessary. It tends to stabilize at
speed 5 and only goes to speed 6 for short periods of time. 

Since Elecraft put in 6 fan speeds and since speed 6 has the ability to
quickly cool it back down to speed 5 then I am of the opinion that I am
operating the amplifier within its design limits. 

My antennas are resonant and my SWR is low.

73,
Mike K2MK


Johnny Siu wrote
> May be I would like to ask the question from another angle.  Can KPA500 be
> used for RTTY in a contest condition say at 500W?  If not, do we need to
> turn it down to 300W?
> Can anyone share with real life experience of using KPA500 in RTTY
> contest?
> 73
> Johnny VR2XMC





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