Thanks, Michael. I have seen exactly one instance in my past
electronics/physics life where OFHC demonstrably made a difference
to something, and that was in a 600 keV proton linac fed with a 500
kW 267 MHz RF source. Not quite what I am building in my
basement. I agree, there's lots of "alternative fact" on the
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On 2019-09-21 17:07, Michael Rozeboom
On 2019-09-21 4:34 p.m., Blair &
so far, no answer from Ross.
From others, an unknown scale 10 miles in length reports no
problems, and an N scaler tells me to reduce my gauge and use
OFHC copper, and I won't have problems.
Four engine consists in HO meeting four engine consists in HO
means I won't be reducing my primary bus gauge.
As for OFHC, point me at some objective measurements and
reasoned arguments, please, because I'm not believing yet.
I'll answer that: It makes no difference. All copper wire is
"oxygen free", because if there is too much oxygen, you can't
draw it into wire as it is too brittle.
I regularly make measurements with an uncertainty of 20ppm.
Using regular wire, be it welding cable or 12AWG, even with off
the shelf coax and instrument wire in the mix. If using an
exotic wire would make any difference, that would have been
discovered long ago.
When making current measurements, I can magically make my
secondary leads have zero impedance. But the wire itself isn't
The oxygen free idea is really designed to lighten the wallets
of silly audiophools, who believe that it will improve their
experience. They also believe that 4AWG welding cable is better
and will improve their audio.