Under Simulation Variables - Aircraft Radio Navigation - TACAN
there is:
TACAN AVAILABLE
[0] Index
Will be TRUE (1) if NAV1, NAV2, NAV3 or NAV4 can receive Tacan (depending on the index - 1, 2, 3, or 4), or FALSE (0) otherwise.
I.e. referring to unit 3 and 4.
While the NAV section only lists unit (index) 1 and 2
e.g.
NAV AVAILABLE
[0] Index
Flag if indexed Nav equipped on aircraft. Index is 1 or 2.
Bool
Also TACAN STATION DISTANCE lists only unit 1 and 2 / others just refer to the indexed station.
TACAN STATION DISTANCE
[0] Index
The distance between the indexed Tacan station position and the aircraft position.
The index value refers to the Tacan receiver connected to the station (1 or 2).
In Key Events there is only TACAN 1 or 2 to be handled
e.g.
TACAN1_ACTIVE_CHANNEL_SET
TACAN2_ACTIVE_CHANNEL_SET
[0]: Channel value (1 - 127)
Set TACAN 1/2 active channel, from 1 to 127.
Basic question is:
What Radios are really available in either of MSFS2020 and MSFS2024
From there please update the documentation
Thank you
I see the number of NAVs description is updated to having 1..4 depending on the acft config setting
I see the key events of NAV and VOR now having 1..4 avaiable
I see the TACAN1 and 2 Key events updated for 1 AND 2
However the key event TOGGLE_TACAN_DRIVES_NAV1 is described as:
‘Toggles the [TACAN DRIVES NAV](file:///E:/D/MS/MSFS2024_SDK/Documentation/html/6_Programming_APIs/SimVars/Aircraft_SimVars/Aircraft_RadioNavigation_Variables.htm#TACAN DRIVES NAV) SimVar to indicate that the NAV1 autopilot feature is driven by Tacan instead of classic Nav systems (VOR/ILS).’
where the referred SIM var is an indexed one i.e. it is either of the TACANs driving NAV when there are 2 - but how to set 1 OR 2 driving the NAV.
For the similar GPS event it is obvious as there is only one GPS but the TACANs are possibly (not likely…) two and which one is then toggled i.e feeding the AP?
May be I am completely wrong with my comment and not understanding how things are meant !? Let me know