[Elecraft] KPA-500: 120vac vs. 240vac

[Ron D'Eau Claire]

True, Jim, speaking of the voltage difference between key-up when the amp is
not doing anything and key-down when the amp is making RF, but that doesn't
affect the operation while making RF one bit.

(Actually I wrote the bit you attributed to Don, which is why I am
answering)

73, Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jim Brown
Sent: Tuesday, December 27, 2011 7:08 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KPA-500: 120vac vs. 240vac

On 12/27/2011 1:27 PM, Don Wilhelm wrote:
> or any particular DC PA voltage, there should be no difference in drive
> level or heat dissipation, so that depends on how the user has set the
> transformer tap rather than the AC input voltage.

Because the KPA500 power supply is not regulated, the total regulation 
will be a bit better running from a 240V source, assuming the same size 
conductors for both circuits.

73, Jim K9YC
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