Test complete.....
Test 3a
See 1st picture.
RX pushed into the tailpipe next to turbine.
This places it in metal surrounded by carbon and metal tape.
Aerials in line with each other (against Futaba). TX on low power.
NO clear line of site from tx to rx.
See pic 2.
Walked off with aerial on tx pointing at the model.(tx would have same view as the camera)
Ran out of garden again! 45 long paces..still working perfectly [X(]
Test 3b
Repeat test but push rx to mid length of tailpipe.
No change ...perfect operation.
Test 3c
Place aerials at 180 deg (inside tailpipe mid length) Rotate fus so it is sitting on its belly.
No change!!! perfect operation with the tx aerial pointing at the rx.
Amazing stuff.
Can not fault it