[old_tv_nut]

See the setup procedure attached.

Regarding the resistance readings of the delay line in circuit, it is very complicated to tell what they should be because you are measuring everything connected to it. The only way to be sure is to have readings from a good set to compare to.

The alternative is to disconnect the line and see what readings you get of the line by itself. There should be conduction from the input to the output and no conduction from either the input or output to ground.

I'm not sure what the normal resistance is between input and output, but I suspect it will be low, as theoretically the line is supposed to work by a combination of distributed inductance (the coil) and distributed capacitance (the coil is wound on a thin insulator over a ground foil).