JB sez "N is a 50 ohm connector, but the PL259/2O239 is a stepped
transistion and isn't even specified for impedance."

Actually, think you will find that N connectors, as well as BNC
connectors come in Several Impedences! (Not one size fits all).

Had surplus ones with center pins fit 90 ohm, and 75 ohm (no go on 50
ohm coax)! Be sure to check connector specs! Jim NN7K

Excellent point! You usually need to get specific connectors for specific
cable. Trying to get what you ordered is often the reason for surplus (or
failure). There are so many ways to goof up a communication system these
days. Come to think of it, there is far more to be considered for people to
be able to see eye to eye.

For instance, there has always been a conflict over how much supervision
should be required for the "man in the field".