Burt; Sorry for the delay.
I don't have a camera to easily measure the
original wire. I did find RG174 that is .11"
in diameter. Most of the dealers I have
catalogs for only have it in 100' spools?
Anyway if you want a specfications sheet to
see if it may work.
www.jameco.com PN:232784CE is the spooled version and has a
link for the specfications sheet. Then you
can look at the bulk version that is chaeper.
PN:112037CE.
I have no idea if this will fit your needs.
I will still keep an eye out for other wires.