Lightning Retardant Cable (I use it for my antennas and deepwell pump 240vac lines): 

It contains a counterwound helix of copper around the original cable to be protected.  In the case here, we have Andrews 7/8" heliax cable.  The cable is sent unjacketed from Andrews to the licensed wire/cable company to add the technology.  A layer of GE ULTEM insulating tape wraps around the copper jacket and a 1 inch copper strap is spiraled onto the cable.  ULTEM has a dielectric strength of 6,000 volts per mil thickness and is fire retardant.  Another insulating layer of ULTEM is applied, and then a counterwinding of 3/8" copper braid is spiraled on the cable.  Then a protective jacket is extruded on the cable, marked, and sent out.

The Geneneral Electric ULTEM insulating layer is peeled away from the copper foil:

At the connector ends all the copper has to be bonded together.  So, I wrap the copper tape around the heliax, while criscrossing the copper braid into the foil.  The objective is to have a solid mass of copper wrapped around the cable:

Then the clamp is attached (yes, clean up the outer jacket, and snip off loose ends before attaching the clamp.

Then apply a layer of fresh electrical tape.  Then bond the grounding cable to the antenna base.  The same process is applied on the radio end.

http://www.lrccable.com/choices_n.htm

This photo shows how to wrap the double helix copper foil with the ground wire inside the A/C box.

 

 

 

 

 

 

 

 

 

 

 

 

 

This is the "DeepWellPump" version, which protects pumps from lightning damage.

For more information:  http://www.lrccable.com