On Jun 7, 1:15*pm, "Dave" wrote:

you might want to try the mfj reading again at the coax going into the
tuner. *the length of the line and the impedance lumps from the relays in
the tuner will transform the impedance going through the tuner even in
bypass mode. *while the difference may be small on the low bands it could be
significant on the higher bands.

Thanks Dave. I completely missed that. New data set follows with
transmission line directly connected to MFJ-259B. Maybe a little
better agreement, but still too many variables and uncertainties in
the instruments I have to expect much better. Owen, Cecil, Richard et.
al. pointed this out when I started down this trail. Still, it was a
good exercise and I learned some things along the way


Frequency(Mhz) MFJ-259B ZL Tuner ZL (calculated)

3.50 16-j52 27-j42
3.98 25+j31 32+j28
7.15 39+j11 46+j2
14.17 42-j22 53+j7
28.35 68-j37 65-
j16