And the fact that your aluminum mast is gonded ...why challenge the
working parameters of your tuner? It also prevents those tingles you
refer to when someone(yes, perhaps foolishly) comes in contact with
that backstay or mast while TXing... And I'm sure you realize that
despite what anyones opinion of it might be, that plastic AT-130 is the
most common tuner in the fleet these days...and works well enough with
an INSULATED backstay and efficient counterpoise....
regards
markvictor