[TenTec] OT 75 Ohm twin feeder

[Stuart Rohre]

The rated breakdown voltage of the coax would be increased if only using 
the shields as conductors, as you would have two jacket thicknesses 
between shields.  You could even sleeve the coax outer jacket with 
additional heat shrink tubing for thicker and thus higher voltage 
insulation.

Ten Tec L net tuners are lower loss than most common tuners, since they 
have one less loss producing component, and are typically built well. 
(Rugged).

Stuart Rohre
K5KVH