On Wed, 18 Jul 2012 03:24:41 +0000 (UTC), gregz
wrote:

The stuff was 300 ohms. I'm pretty sure the name was belden super permaohm.
This was back in the 60's . The only reference I find, is my own. I do find
another name, city color by belden. Twin 26 gauge wires with foil shield.
Greg

It was called Belden "Permohm" and later changed to Belden "City
Color". Belden recommended it for locations with high interference
levels. The loss is about the same as the equivalent length of coax
cable. I checked the online Belden catalog and didn't find any manner
of twinlead. Belden allowed the Permohm trademark to expire in 2001:
http://www.trademarkia.com/permohm-72089125.html
City Color is a listed trademark, but not by Belden.

Scroll down to "WR-TWIN-TV" and "WR-TWIN-TV-100":
https://www.fairradio.com/catalog.php?mode=view&categoryid=228
That's not a Belden part number. I don't know where they got the
stuff. Belden may have sold the product to someone else.

Drivel: We had a local ham that spent some time characterizing the HF
transmission line characteristics of 12-2 Romex power cable. It
actually worked reasonably well until the price of copper made it
uneconomical. Ummm... not recommended for TV or FM use.




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