I have one of these and use it to tune up before I connect a transmitter. It has a unbalanced N connector for antenna input. It does a great job with coaxial fed antennas. It also does a good job with the 50 ohm input to my Stoner 600 ohm OWL tuner. Question is, if I make a bal-un for the input and do some sort of testing or calibration thru the bal-un, will I be getting a true reading when testing an OWL? Or, will just "fooling" the analyser?