Antenna Flat Styled Wire

[zeno]

Called 300 ohm twin-lead. As said most is heavy foam lead.
A little digging & should be able to find a spool, even
the more retro thin stuff. It does have the advantage of
less loss especially at UHF, also cheaper than coax.
We used it in problem UHF installs when the customer was
too cheap to by an amp.

73 Zeno