[Phil Allison[_3_]]

"GRe"
"Phil Allison" "GRe"

** Almost certainly it's a high quality, 600 ohms line driving
transformer.

The primary impedance is about 1000 ohms and so suits cathode drive from
a
small power tube, via a coupling capacitor.

Max operating level is about 10 volts rms, with 13 volts drive on the
primary.

Line receiving versions were usually fitted into a ( mu-metal) shielding
can.


Sounds like a bull's eye shot to me!
With a line transformer application in mind I did some more tests.


** You are wasting your time with irrelevant tests.

The tranny is intended to be driven from a low impedance source ( circa 50
ohms) and that tends to irons out effects due to low magnetisation.

You need a THD meter to make sense of what matters and what does not.



..... Phil