The coax choke does not perform an Z transformation.

Hi Richard,
I was wondering about that when I tried to answer Ken's question. The choke
he described was 13 turns of RG-58 on about a 5" form. That is about 17' of 50
ohm coax. That will transform the heck out of impedances other than 50 ohms
resistive.

This implies the coax choke does perform a Z transformation. I think a true
1:1 balun can best be realized with a W2DU type with a 100 or so ferrite beads
on about a foot of coax. What do you think?
73 Gary N4AST