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Re: Topband: Perils of qrp power readings

To: topband@contesting.com
Subject: Re: Topband: Perils of qrp power readings
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Wed, 10 Nov 2021 12:06:00 -0800
List-post: <mailto:topband@contesting.com>
Remember that

1) Tolerance of power readings with Bird slugs WHEN CALIBRATED is 5% of full scale

2) Accuracy of power readings when line is mismatched varies with position on the line

73, Jim K9YC

On 11/10/2021 11:35 AM, W3HKK@roadrunner.com wrote:
I compared numbers from my Daiwa CN720B to the Bird numbers and got:
20w my Po was 3% low.
10w my Po was 5% low
  5w my Po was 28% low.

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