Martyn Preston kirjoitti:
Does anyone know how lossy perspex is at 2.3GHz? Want to use it to support a
helical antenna.

TIA - G0THY


Hi

I wouldn't try perspex nowadays
Perspex itself is very lossy when compared to modern compounds
I think perspex absorbs easily humidity and then you may have problems.
Specially in voltage maximum points of helical.
For the same reason I don't recommend fiberglass for outdoor use.

I recommend Teflon or nylon for insulators and supports.

73, Risto OH2BT