The GNS430 is compatible with many CDI's on the market. There is a
requirement around the annunciator for the CDI itself where the user needs
to know if it is tracking the GPS or the VLOC (NAV). The 430 has an
indication on its display which may satisfy that requirement, I'm not sure.
The Garmin GI-106 CDI has it on the CDI face as well but the unit will run
you $1,100+. There is also an electronic CDI on the default NAV screen but
that of course has no glideslope.

Marco Leon



"abripl" wrote in message
oups.com...
What about the external CDI?