[Elecraft] Special type of coax - need info

[Jim Brown]

On 1/16/2018 12:53 PM, David Christ wrote:
> Twinax under that name was a two conductor shielded coax like cable for balanced antennas.  The R-389 for instance had a connector for that kind of cable.

I am NOT looking for TwinAX nor two coaxes wither their jackets bonded. 
RG400 is what I'm looking for, and thanks to those who correctly read my 
mind. :)

73, Jim K9YC