KPA100 questions before purchase

[info4mjs]

Hi,

I've been trying to decide whether to get the KPA100 or an external power amplifier such as the Ameritron ALS-500 or SGC power cube.  From what I understand, the Ameritron (which uses 4 of the same transistors that the KPA100 uses)  will deliver 150-200W with the K2 and the SGC will run full power or about 500W.

I would like to run in the 100 to 150W range most of the time but have to concede that I might want to run more power with my ICOM radio so there is a definite advantage to an external amp.

A major consideration, is that I want to be able to maintain my own equipment, which is why I went for a K2 in the first place.

So, while mulling over the pros and cons, I would like to get an idea of how much time the KPA100 would take to build for a seasoned kit builder/homebrewer.

Thanks in advance for any comments or suggestions.

Mike, WA1SEO
K2 4778
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[Ron D'Eau Claire-2]

Mike, WA1SEO, wrote:

I've been trying to decide whether to get the KPA100 or an external power
amplifier such as the Ameritron ALS-500 or SGC power cube.  From what I
understand, the Ameritron (which uses 4 of the same transistors that the
KPA100 uses)  will deliver 150-200W with the K2 and the SGC will run full
power or about 500W.

I would like to run in the 100 to 150W range most of the time but have to
concede that I might want to run more power with my ICOM radio so there is a
definite advantage to an external amp.

A major consideration, is that I want to be able to maintain my own
equipment, which is why I went for a K2 in the first place.

So, while mulling over the pros and cons, I would like to get an idea of how
much time the KPA100 would take to build for a seasoned kit
builder/homebrewer.

---------------------

>From my notes, my KPA100 took 25 hours to assemble. I'm a slow, patient
worker. I hate fixing mistakes. There were no surprises or rework needed on
the KPA100.

The difference between 100 and 150 watts is about 1/4 of an S-unit. Hardly
worth worrying about. And don't forget that Wayne/Eric have already leaked
the existence of a QRO amp addition to the Elecraft lineup in the final
stages of development. You can be sure it'll integrate perfectly with the
K2/100.

Ron AC7AC


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[Hisashi T Fujinaka]

On Fri, 29 Jul 2005, Mike Stricker wrote:

> So, while mulling over the pros and cons, I would like to get an idea
> of how much time the KPA100 would take to build for a seasoned kit
> builder/homebrewer.

It took me a weekend. I tend to get sucked in when I do things like this
and I have some experience, so I probably finished on the fast end of
the spectrum. I remember finishing late afternoon on Sunday.

I also remember driving to the hardware store to get a wire brush tool
for my Dremel. I would (and have repeatedly :) ) suggest using that to
remove the anodizing from the heat sink in just the places necessary.
The Emery cloth did me no good.

--
Hisashi T Fujinaka - [hidden email]
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte
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