If my memory serves me correctly, power calibration is done band by
band. I suggest you calibrate the amp PWR ADJ to agree with your LP=100
for each band. Be sure to use a 50 dummy load and NOT an antenna.
73
Bob, K4TAX
Message: 17
Date: Fri, 5 Feb 2021 16:06:10 -0700 (MST)
From: Lou W0FK<
[hidden email]>
To:
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Subject: Re: [Elecraft] KPA-1500 power reading ?
Message-ID:<
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Content-Type: text/plain; charset=UTF-8
Ed Stallman-2 wrote
> The KPA1500 is new to me and very happy with my purchase . I'm using the
> LP-100A watt meter and comparing it with the KPA-1500 they both read
> close enough 10 to 160 . On 6m I'm seeing a bigger spread? with the
> LP-100A reading 1500w the KPA-1500 is showing 1375w . If you look at
> this in DB , it's nothing. I know the LP-100A is very accurate and the
> only way to know for sure is to have Larry at Telepost test it. Most
> likely wont do wont do that. Are their others that see a difference on 6m
> ?
>
> Thanks Ed N5DG
I have the same setup Ed (KPA1500/LPA-100A). I've always seen a difference,
and never really paid much attention to it. When I read your email I ran
some very quick and dirty tests, here's what I'm seeing:
80M: LPA -- 1322, KPA1500 -- 1513
40M: LPA -- 1325, KPA1500 -- 1504
6M: LPA -- 1345, KPA1500 -- 1550
Pretty consistent with your 6M readings. Are you seeing much closer numbers
than mine?
73, Lou W0FK
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