:39:00 -0400
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 question about cooling
I do a lot of meteor scatter on 6 meters, and I've tried the tuner both above
and below the amp.
I've found the KPA500 runs cooler with the KAT500 tuner below the amp.
73 de Sebastian, W4AS
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Gillingham
Sent: Monday, May 27, 2013 8:31 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 question about cooling
Yes.
The very first statement under Installation in the KPA500 owner's manual is
the following:
IMPORTANT
Of Richard Gillingham
Sent: Monday, May 27, 2013 8:31 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 question about cooling
Yes.
The very first statement under Installation in the KPA500 owner's manual is
the following:
IMPORTANT: Provide at least 2 inches (5 cm) clearance behind
On Mon, 27 May 2013 09:31:23 -0400, Richard Gillingham wrote:
IMPORTANT: Provide at least 2 inches (5 cm) clearance behind the
fan and above the amplifier for proper air flow.
Nuf said.
Roger that! And yes, the fan makes PLENTY of noise when it kicks up to
high speed. It isn't enough
clearance.
73 Ron AC7AC
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Gillingham
Sent: Monday, May 27, 2013 6:31 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 question about cooling
Yes.
The very first
in the manual. Maybe
we'll see a change soon.
73
Gil, W1RG
From: r...@cobi.biz
To: w...@hotmail.com; elecraft@mailman.qth.net
Subject: RE: [Elecraft] KPA500 question about cooling
Date: Mon, 27 May 2013 08:03:34 -0700
Aha. You caught something that needs fixing Gil. I'm not an Elecraft
Those who know something about fluid dynamics can also tell you that if
the air flow is restricted, the fan speed will be a bit higher (for any
given KPA500 selected fan speed) - it is because the fan is not doing as
much work to move air.
Try an experiment with any fan - partially block the
On Sun, 26 May 2013 16:40:48 -0400, Bill wrote:
Is it necessary that the top of the amp be unblocked? I was thinking of
the KAT500 being placed on top of the amp. Perhaps the other way around
would be better? Any side clearances required?
You'll find out when you build the KPA that the top
The KAT500 may be placed on TOP or under the KPA500.
From Placement on page 3 of the KAT500 manual:
The KAT500 may be placed under or above either the Elecraft K3 transceiver
or the KPA500 solid state
amplifier. The KAT500 can easily handle the weight of the KPA500 amplifier.
The KPA500's
On Sun, 26 May 2013 15:06:25 -0700, Ron D'Eau Claire wrote:
The KAT500 may be placed on TOP or under the KPA500.
I wouldn't put it on top. I can hear fan and air changes if I get within a half
inch of the intake slots with my hand at higher speeds. You can feel the air
flow considerably at
, 2013 3:23 PM
To: elecraft
Subject: Re: [Elecraft] KPA500 question about cooling
On Sun, 26 May 2013 15:06:25 -0700, Ron D'Eau Claire wrote:
The KAT500 may be placed on TOP or under the KPA500.
I wouldn't put it on top. I can hear fan and air changes if I get within a
half inch of the intake
If you put the KAT500 above the amp the fans run more often, but are able to
keep the amp cool enough for most normal uses. K6XX did test this early on
with thermometers. It comes up to fan temp more quickly, but settles at the
same temp. I have mine above the amp, but the amp can also be
On 26 May 2013, at 4:47 PM, mcduf...@ag0n.net wrote:
On Sun, 26 May 2013 16:40:48 -0400, Bill wrote:
Is it necessary that the top of the amp be unblocked? I was thinking of
the KAT500 being placed on top of the amp. Perhaps the other way around
would be better? Any side clearances
I do a lot of meteor scatter on 6 meters, and I've tried the tuner both above
and below the amp.
I've found the KPA500 runs cooler with the KAT500 tuner below the amp.
73 de Sebastian, W4AS
On May 26, 2013, at 6:23 PM, mcduf...@ag0n.net wrote:
On Sun, 26 May 2013 15:06:25 -0700, Ron D'Eau
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