> The power reading error range of a Bird 43 using a 250W slug
> (calibrated to factory spec) for both forward and reflected
> power, with about 140 watts forward power and 15 watts
> reflected showing, would be from 100-150 watts.
Well, since we're having fun taking this seriously, let me pile on -
the Bird 43 is hardly "state of the art" (albeit very useful).
Larry N8LP's LP-100 is probably as good as it gets these days,
and it has
"Power accuracy is better than 5% at any frequency from ~1W to
maximum, 3% typical with NIST traceable factory calibration"
So, nope, you probably can't hang onto exactly 150W.
73 de chris K6DBG
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