Originally Posted by maus92
I'd like the ability to display GDL-39R FIS-B info on either display (in a dual display setup.) Currently, it's only available to the GDU that the serial line is physically connected to.
Although it is true that the GDL 39 supports only a single wired RS-232 connection, you may optionally display FIS-B weather information on a second GDU 4xx display using the Bluetooth interface. This is documented in section 8.11 of the G3X Touch pilot's guide: http://static.garmin.com/pumac/190-01754-00_E.pdf