[Elecraft] KPA500 on AM...

[Don Wilhelm]

John,

The KPA500 is rated for 500 watts PEP.
With AM, that is 250 watts carrier, and 250 watts of sideband energy 
(125 watts for each sideband).  So your "talk power" is 125 watts, 
compared to 500 watts SSB.

Note that is for 10 minutes transmit with a 5 minute receive period.  If 
you are "long winded" and want to exceed that 10 minutes keydown, you 
should reduce the power.

See the specifications.  If you want to exceed the specification limits, 
you do so at your own peril, although the KPA500 has means to protect 
itself.

73,
Don W3FPR


On 1/19/2020 12:43 PM, Macy monkeys wrote:
> 
> One more question then I'll go back into hibernation. What is considered a safe drive level for the KPA500 when operating AM? I haven't tried it yet but I imagine the cooling fan goes into jet takeoff mode.
> 
> Thanks, John K7FD