Of the solutions presented in the ARRL Antenna Book for 2nd storey
grounding...ha, ha! There are no solutions!

But that doesn't help me.

I live in an apartment - a set of rooms in a 100+ year old building, so
you'd THINK they'd have copper/metal plumbing; but, no. It's been
pvc'd. So no cold water pipe.

The ARRL cautions, and I concur, against dropping a long bit o' wire
from the window to the ground - many issues, including having the
ground wire function as a resonator, or, RF burns from touching th
radio. Don't want those.

There's the MFJ "artificial" ground, but I don't see how that would
work with the ATAS 100 I have - like having an antenna tuner for an
antenna tuner.

Any thoughts?

thanks,
kc0olm