To: Peter Dougherty ; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 tuner question
I experienced the same thing, especially on 20M. The tuner is apparently ignoring some of the
signals on the AUXBUS line. I put a scope on that line. I can see, some of the time, the
amplifier
: [Elecraft] KPA-1500 tuner question
I experienced the same thing, especially on 20M. The tuner is apparently ignoring some of the
signals on the AUXBUS line. I put a scope on that line. I can see, some of the time, the
amplifier responding to the signal with a "clunk" as the tuner rel
t;
> -Original Message-
> From: Walter J. Legowski
> Sent: Thursday, February 21, 2019 10:22 AM
> To: Peter Dougherty ; Elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KPA-1500 tuner question
>
> I experienced the same thing, especially on 20M. The tuner is apparent
-Original Message-
From: Walter J. Legowski
Sent: Thursday, February 21, 2019 10:22 AM
To: Peter Dougherty ; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 tuner question
I experienced the same thing, especially on 20M. The tuner is apparently
ignoring some of the signals
If HiSWR AUTOTUNE is enabled, this would be the expected behavior.
However, ATU switching at the start of transmission sometimes happens
even with it disabled.
Elecraft is working on the ATU firmware in relation to this issue. I
noticed it some time ago. Even with the HiSWR AUTOTUNE turned
Things to check
Could be bad aux cable. Is it from Elecraft?
Do you have anything else connected to aux?
Are you sure connectors are fully engaged?
On Feb 21, 2019, at 10:21 AM, Walter J. Legowski wrote:
I experienced the same thing, especially on 20M. The tuner is apparently
ignoring some
I experienced the same thing, especially on 20M. The tuner is
apparently ignoring some of the signals on the AUXBUS line. I put a
scope on that line. I can see, some of the time, the amplifier
responding to the signal with a "clunk" as the tuner relays adjust to
the new segment. The rest
With updated firmware and an aux cable this should be happening.
Jim ab3cv
On Feb 20, 2019, at 10:42 PM, Nr4c wrote:
Put the ATU in Man mode.
Sent from my iPhone
...nr4c. bill
> On Feb 20, 2019, at 10:36 PM, Peter Dougherty wrote:
>
> Hi all,
> Something I noticed this past weekend in
Put the ATU in Man mode.
Sent from my iPhone
...nr4c. bill
> On Feb 20, 2019, at 10:36 PM, Peter Dougherty wrote:
>
> Hi all,
> Something I noticed this past weekend in the contest about the KPA1500,
> especially on 80 and 160, where the internal tuner was needed on antennas
> that were
Hi all,
Something I noticed this past weekend in the contest about the KPA1500,
especially on 80 and 160, where the internal tuner was needed on antennas
that were above ~1.5:1 SWR. When I changed frequencies into a range that
required retuning, I had to manually press the ATU control and initiate
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