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…
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.
Hi Peter. At 430 GS is separate, on GTN is combined.
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:
Or this:AV-587
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.
Yes, its deviation but good one :) Less connections, less elements, less points of problems..
