[Elecraft] KPA1500 Faulting for High SWR inappropriately
Bob McGraw
rmcgraw at benlomand.net
Mon Dec 19 20:38:01 EST 2022
Use an antenna analyzer to determine the actual complex antenna
impedance. I've always viewed SWR as more of a hocus pocus value, easy
value to obtain, but very broad in definition as it is a ratio between
two impedance, both usually unknown.
Chances are the antenna or a connector or feed line or lightning
protection device is breaking down under power. The SWR meter won't
show this.
73
Bob, K4TAX
On 12/19/2022 4:55 PM, elecraft-request at mailman.qth.net wrote:
> Message: 19
> Date: Mon, 19 Dec 2022 20:59:21 +0000
> From: "David F. Reed"<w5sv.dave at gmail.com>
> To:"elecraft at mailman.qth.net" <elecraft at mailman.qth.net>,
> KPA1500 at groups.io
> Cc: Elecraft Support<support at elecraft.com>
> Subject: [Elecraft] KPA1500 Faulting for High SWR inappropriately
> Message-ID:<e3549ad7-8893-8c6c-6691-9607ee009d93 at gmail.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> My KPA1500 has started faulting inappropriately for High SWR.
>
> I say inappropriately because all 2 of my SWR meters (K4D, KPA1500,
> Palstar HF-AUTO) show an SWR of between 1.1:1 and 1.2:1. with just the
> K$ transmitting and also with the KPA1500 in fine as it faults out.
>
> Any ideas?
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