RST Engineering wrote:
I want to add another Nav radio w/GS to my plane. I can use the extra
Nav output from my existing coupler for the new Nav radio, but I need
an additional GS output for the new GS receiver.


Why in heaven's name do you want TWO glideslope receivers? Just like the
man with two watches who never really knows what time it is, you will never
really know which one is telling the truth.

Cat 2 ILS?

But seriously, some ILS/LOC approaches use VOR radials to identify
the fixes. If both nav receivers have glideslope, then it doesn't
matter which one you use to tune which navaid.