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[Amps] Power meter calibration

To: <amps@contesting.com>
Subject: [Amps] Power meter calibration
From: "Martin Sole" <msole@loxinfo.co.th>
Date: Mon, 6 Oct 2003 16:40:06 +0700
List-post: <mailto:amps@contesting.com>
Apologies if this is not really amps but lots of wise old owls on here
methinks.

I have built a power meter, to measure the power out of my amplifier,
hopefully that keeps this on track. I have a question concerning
calibration. Ignoring diode non-linearity's and other spurious
imperfections, what sort of law should the meter scale be calibrated
according to. I have the WB6BLD meter scale drawing program for which
the included 200 watt scale uses a linear exponent of 0.55. Having tried
this it just doesn't seem right. What's the formula?

73
Martin, HS0ZED


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