Art wrote:
"And YES I put you in the same class as KB9...."

Art is overheated.

0.1 dB could be a power gain of 1.02 or 0.977.

If the power were 100, and the power read 102 or 98 that would be about
0.1 dB (from Terman`s Handbook).

My Bird Model 43 has a specified accuracy of +5% or -5% of the
full-scale meter reading. It is a reasonably accurate meter for field
use. If the scale was 100 and it should be reading 50, it could read 55
or 45 and be within specification.

My usual hope when making commercial measurements was within 1.0 dB.

Best regards, Richard Harrison, KB5WZI