Hey Slider, the Fairies and Pixies must really love you !!!!!
Though - what about a high single fine wire only - ie. NO ground ?
At the far wire end, connect back to back polarity reversed LEDs between wire and centre pancake inner. Leave outer braid open circuit at centre, but join braid and inner at edge of pancake.
Then from indoors, find the wire line drive radio frequency at which the pancake will free space resonate with respect to the wire, and thereby cause the LEDs to light.
Just a suggestion.
Cheers ........... Graham.
Though - what about a high single fine wire only - ie. NO ground ?
At the far wire end, connect back to back polarity reversed LEDs between wire and centre pancake inner. Leave outer braid open circuit at centre, but join braid and inner at edge of pancake.
Then from indoors, find the wire line drive radio frequency at which the pancake will free space resonate with respect to the wire, and thereby cause the LEDs to light.
Just a suggestion.
Cheers ........... Graham.