[Elecraft] KPA1500 wattmeter adjustment

Bob McGraw rmcgraw at benlomand.net
Sun Feb 6 12:09:56 EST 2022


'Twas said "a man with one watch always knows the time.  A man with 3 or 
4 watches is never quite sure of the time.".

I just recently went through power calibrations on my K3S and my 
KPA500.  All now agree with the power meter reference I used. Also, this 
was done using a known 50.5 ohm dummy load.  On the antennas, even 
though SWR is indicated 1.1:1, there will be differences due to 
difference line complex impedance's.

73

Bob, K4TAX


On 2/6/2022 9:51 AM, elecraft-request at mailman.qth.net wrote:
> Message: 15
> Date: Sat, 5 Feb 2022 14:53:59 -0600
> From: Ronnie Hull<w5sum at comcast.net>
> To: Dick Dievendorff<dick at elecraft.com>
> Cc:Elecraft at mailman.qth.net
> Subject: Re: [Elecraft] KPA1500 wattmeter adjustment
> Message-ID:<BEE49DCD-B7EA-4DA5-89E6-35F933166F77 at comcast.net>
> Content-Type: text/plain; charset=utf-8
>
> Lucky your that close! My K3, P:, Lp100 and kpa1500 are all wayyyy different. I accept the LPA100 as being correct!
>
> Ron W5SUM



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