[Elecraft] Unbelievable!

[Barry Simpson]

Hi Brian

My experience with the KPA500 exactly mirrors yours. After some fairly long
overs, my fan begins to sound a bit like a vacuum cleaner although nowhere
near as loud as my former linear, a Yaesu FL7000. I do not find any cause
for complaint. It is simply a fact of life.

I am also bewildered by people who say they never hear the fan in their K3.
Mine comes on almost from the start and I can always hear it, even with my
headphones on.

73

Barry Simpson  VK2BJ

On 22 January 2012 11:40, Brian Alsop <alsopb at nc.rr.com> wrote:

> Like all things too good to be true, this posting about the KPA500 is a
> bit unbelievable.  Like cars, YMMV.
>
> My experience with the KPA500 is much different.  I suspect Jack only
> operates SSB.
>
> On CW expect the fan to come on after a few transmissions in under 30
> seconds.  Levels 1, 2 and sometimes 3 are often heard when doing some
> rag chewing at 500 W.  The temperature stays below 70C as it should.
> RTTY is about the same with contest type operation.   Expect the fan to
> operate as designed for these modes.
>
> It is not an absolutely quiet fan. I doubt Muffin type fans can be more
> quiet that what is used on the KPA500.  One would have to go to a
> centrifugal fan like used on some of the really silent big amps to have
> it "pin drop" quiet.
>
> 73 de Brian/K3KO
>
>
>
> On 1/21/2012 23:19, Jack Berry wrote:
>
> > I'm with you Fred. I wish Elecraft made cars. They would read our minds,
> last for 20 years and get 300 mpg!
> >
> > On Jan 21, 2012, at 4:03 PM, Fredric Serota<fserota at msn.com>  wrote:
> >
> >> I don't usually say much on these lists. But I have just finished
> building
> >> my KPA500, and I have to say that in my almost 50 years of hamming,
> this is
> >> the most incredible piece of equipment I have ever had. Now, I am not
> >> related to Elecraft in any way. They don't even know who I am. But I am
> so
> >> impressed with the quality of components and the engineering and thought
> >> that went in to this little package that I may sell my other amp (name
> >> starts with the first letter of the Greek alphabet) and buy another. My
> >> other amp is so noisy, the fan runs so loud and the "QSK" relays
> >> clickity-clack" when sending CW. The KPA500 is as silent as can be,
> >> generates over 600 watts without any noise at all. The only time I can
> hear
> >> the fan is when I shut down the amplifier, it turns on to bleed the high
> >> voltage to make it safe if you want to poke inside. No other piece of
> >> equipment I have ever had does that. It follows the K3 without
> blinking. And
> >> the software gives you all the measurements, including temperature,
> that you
> >> would ever want to know. And the satisfaction of breaking a pile up with
> >> half the power I usually run, puts the fun back in operating.
> >>
> >>
> >>
> >> And all you guys can say is you don't like the color of the buttons.
> >> Unbelievable!
> >>
> >>
> >>
> >> Fred Serota, K3BHX
> >>
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