Posted by
Robert Friess on
May 14, 2005; 3:35pm
URL: http://elecraft.85.s1.nabble.com/DL1-20W-Dummy-Load-tp378360p378363.html
The correct formula which accounts for both the center tap detector and the
diode drop appears in the DL1 manual.
73,
Bob, N6CM
----- Original Message -----
From: "Bruce Bowman" <
[hidden email]>
To: "Elecraft Mail List" <
[hidden email]>
Sent: Saturday, May 14, 2005 1:02 AM
Subject: [Elecraft] DL1 20W Dummy Load
>I was doing a calibration of a KAT2 I just built and had a significant
>error to adjust for Forward power (displayed power was ~30% of measured).
>When I looked closely at the DL1 I noticed the trace to the detector comes
>from the center of the 50 ohm load. That means the detected voltage is
>across 1/2 the load (25 ohms) and changes the power calc to V^2/25 = P vs.
>of V^2/50 = P. Can someone confirm this?
>
> Thanks...
>
> Bruce Bowman NM5B
> Sasnta Fe, NM
>
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