The operator.
All is well
73,
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Baldock
Sent: Monday, May 28, 2018 11:04 AM
To: Bill Stravinsky ; Elecraft Reflector
Subject: Re: [Elecraft] 2nd Report
What
Any chance you have the ability to capture and send me spectrograms at
each fan setting? I'd like to get some appreciation for the frequency
and amplitude "manifest".
One of my amateur radio mentors just received his KPA-1500, but he's
recovering from triple bypass in the hospital, so I can't
Good discussion. For giggles I ran sound meter at my op position. About 1
ft below where my head would be so readings would be higher at head level.
Fan Speed Level (db)
1 50
2 59
3 65
4 70
5 75
So it is going
Although making things a bit larger physically, fans enclosed into the
equipment case, thus providing some acoustic dampening, and configured
to pull air into the case {along with much of the noise} and exhausting
air and noise through several ports is more applicable to reducing
overall
No KPA1500 here but I did replace the fans on my lil' ol KPA3 with
Noctuas. They are noticeably quieter. If there is a suitable Noctua
replacement for the KPA1500 fans you might want to compare the sound
level specs to the Sanyo Denkis.
Wonder if it would be possible to build an active noise
What broke on your friends KPA-1500?
- Paul KW7Y
At 07:45 AM 5/28/2018, Bill Stravinsky via Elecraft wrote:
Yeah the fans are pretty noisy especially when
CQing without answers which keeps the amp duty
cycle high. At least when you get answers the
amp has a chanceto cool just a bit and
Yeah the fans are pretty noisy especially when CQing without answers which
keeps the amp duty cycle high. At least when you get answers the amp has a
chanceto cool just a bit and keep it below 70C which is where the hyper drive
fans come into play, hi. I'm still happy with the amp for
First major contest with KPA-1500. Overall VERY pleased. No glitches
other than a few operator errors early in the contest. Loving the amp.
Fan noise...another issue. Usually for a cw contest I use some old ear
buds. Not possible with the amp. Had to use the total ear muffs and still
quite
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