Yes, its deviation but good one :) Less connections, less elements, less points of problems..
Przemek wrote:
Or this:AV-587
That would certainly appear to do the job. However it’s a deviation from the STC-approved data so perhaps needs some consideration before fitting this on a certified aircraft installation.
Or this:AV-587
You can’t just use that splitter or you won’t get any glideslope signal to the GTN.
Here’s the correct way to do it from the GTN install manual:
Hi Peter. At 430 GS is separate, on GTN is combined.
It says it is a replacement for a CI505 which says the same thing.
I reckon the GS output is just the GS i.e. the ~300MHz UHF stuff. In “old avionics” you have a dedicated GS decoder box e.g. a KN73 which is tuned by the radio (frequency selection by some parallel bus) and it outputs the analog deviation and flags.
I am sure wigglyamp will be here with a definitive answer but I think you just need to split “everything” and feed the same stuff to both the GTN750 and the GNS430. Both have RF inputs and internal decoding for VOR/LOC/GS.
http://www.rami.com/wp-content/uploads/2019/05/AV-571.pdf local copy
Question is if NAV output will provide also GS signal? I can’t find any frequency diagrams and clear descriptions. Seems that not but I’m not 100% sure..
I would like to connect NAV/GS→GTN750, NAV→GNS430, GS→GNS430…