> common

I heard that it is enough to drive a 5 cm nail into the wall inside the
junction box (not drywalls). The RF tank is grounded through there. Not a
recommended solution imho but it should work. The leakage would be
determined by the tank coupling capacitors (usually 1 nF 2kV).

Peter

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.