"Larry Gagnon" wrote in
I need to solder a new section of 14 gauge copper antenna wire to a
very old section of wire that is highly tarnished and very old. Other
than pulling each strand apart and attempting to sand off the tarnish
is there an easier way to remove it so that I can solder it
effectively?

Larry, try a solution of sulphuric acid (avalable at retail) for cleaning
and preparing copper joints for soldering. This has been used in
plumbing/pipefitting trades for decades to make a clean joint for soldering.
It should work as well on stranded copper. From your description of the old
wire condition however, your efforts would be better served by just
replacing the old wire and using all new material.

Jack
Virginia Beach VA