[Antennas] Open wire transmission line

[Steve]

Anyone out there know where to buy open wire line?

I checked WireMan, Radio Works and several other web sites but didn't 
find open wire transmission line in their product lines. Saw lots of 
ladder line but no open wire. A google search did not return any useful 
leads.

What I've been using is 20 gauge copper spaced at 1 inch. It has white 
plastic (at least it looks and feels like plastic) insulators at 6 inch 
intervals. I think it's nominal 450 ohm characteristic impedance. I 
think I could accommodate some variation from those dimensions.

Thanks and 73,

Steve K8JQ