KPA-1500 Fan Noise Update - Not Bad at all

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KPA-1500 Fan Noise Update - Not Bad at all

Richard Thorne-4
As you know I was one of the concerned individuals about fan noise.

I went ahead and took delivery of the amp Friday and hooked it up this
morning.

I have all of the equipment installed in a rack just to the right of my
operating desk (updated pictures on qrz.com) within easy reach.

I went ahead and set the fan to position 2 and started calling cq on 10m
RTTY at 1500 watts output (no answers unfortunately).  I kept this up
for 15 minutes or so.  With the fan set to 2 the temp approached 60
degrees.  I'm sure the amp will jump to fan 3 when I've operated RTTY
for more than 15 minutes but I'm betting it doesn't stay at the setting
for very long.

I need to set the fan back to setting 0 and do some testing to see when
the fans start and at what temperature.  I need to do this in all
modes.  I started with RTTY as that's the most demanding mode that I
operate.

The fan noise at 2 is quite acceptable with no head phones on.

The power supply fan is very acceptable.  It sounds like a fan on a
computer to me.  It doesn't have a high pitch wine to it.

Bottom line I'm glad I took delivery.  I still need to read the manual
and setup the ATU but so far so good.  It's great having 1500 watts
available if needed.

I plan on using the two Elecraft amps for SO2R.  Hopefully the setup
will get a good work out during IARU next month.

Rich - N5ZC
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