Posted by
W4GRJ on
Apr 20, 2010; 6:33pm
URL: http://elecraft.85.s1.nabble.com/External-Power-Supply-for-the-KPA-500-tp4931334p4932920.html
I am running a Expert 1K-FA 1KW amplifier on 120 VAC with no problems.
Jack
W4GRJ
-----Original Message-----
From:
[hidden email]
[mailto:
[hidden email]] On Behalf Of Lew Phelps K6LMP
Sent: Tuesday, April 20, 2010 1:46 PM
To: Elecraft
Subject: Re: [Elecraft] External Power Supply for the KPA-500
It's probably possible to build a KW power supply into a K3 enclosure, but a
power supply of that output would absolutely require 220VAC lines, which I
believe is one of the reasons Elecraft focused on the 500 watt amplifier
size. 500 watts is about the limit for running an amplifier from 110 VAC
mains, and requiring access to a 220VAC outlet runs against the grain of the
portability that has always been an Elecraft hallmark.
You can't have it all -- legal limit amp, power supply for same, legal limit
ATU, etc. are incompatible with small size, light weight, and ability to
run on 110 VAC mains. you just can't shoehorn a "big gun" station into a
briefcase.
Elecraft does not have unlimited resources. They have done very well in
targeting market niches that other manufacturers don't serve. There are
already very good and fairly reasonably priced high-output amps on the
market, and I think Elecraft would have a difficult time differentiating
itself from those products, in either performance or price, except to the
relatively small extent that you can save $$ by building your own kit. But
heck, there are even kit form KW amplifiers on the market.
Let's all step back, take a deep breath, exhale, and be thankful for the
great job Elecraft has done in developing and introducing two apparently
wonderful new products at the same time.
Lew K6LMP
On Apr 20, 2010, at 10:27 AM, Edward Dickinson, III wrote:
>
> Would moving the Power Supply out of the KPA500 enclosure leave room for a
> 2nd 500 RF deck inside the K3-sized enclosure? Could two 500 Power
supplies
> fit in another K3-sized enclosure?
>
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