In article ,
Ralph Mowery wrote:

So you are using a DC meter . How do you expect to get any thing meaningful
out of it ?

If I understand correctly, the original poster has lightly modified an
MFJ259, and is "tapping out" the DC voltage which drives its internal
meter circuitry. This voltage is a function of the impedance being
calculated by the MFJ's RF-impedance-measurement circuit.

The original poster is *not* trying to use a DC meter to measure the
RF coming out of the MFJ's SO-239 port.