DimSim

Can confirm that after another 15mins or so in game, the AI jets appeared on the HSD.

Just for interest, I flew Ground Pounder's excellent free Harrier demo campaign for South Atlantic. A lot of flying was low altitude (~150ft). I experienced intermittent but fairly extreme slow downs at times. Because they did not persist, I didn't associate them with specific altitudes or interaction regimes. All flight was around the Falklands, not the main land. I have 32GB RAM and otherwise high system speck.

Following @NagyViktor I tried manually loading Mission 3, and Datalink worked fine. So it's only Mission 1 and perhaps other specific missions which are affected.

Thanks for trying to help. I've tried everything recommended with no success so far. While I thought this was a general F16 issue, it seems to only occur in one or more specific campaign missions. I've joined a thread in that forum with other people observing the same or similar issue. It is a cold start, on taxiway, in Syria.

I did make a new thread, but mod merged it into this one.

Thanks for responding. That is what I have been doing and having success for Instant action missions. Seems this campaign mission behaves differently for unknown reason.

Just arrived to report the same and ask for help. I'm new to F16 so could easily be at fault. Have asked in the F16 forum and tried everything there. I have successfully enabled datalink from the Instant Action missions with both auto and manual startup. I'm trying mission 1 of this campaign and have had no luck seeing other aircraft. Have tried: Auto and manual startup Ensure MIDS LVT not On until INS Aligned Waiting for full alignment before enabling MIDS LVT Ensure INS switched to NAV after NORM for align. (Auto startup leaves on NORM.) Roll away from hanger. Get airborne. (To avoid radio/GPS obstruction.) Hack 'Fix' by turning GPS Time off and on again from DED -> LIST -> DLNK Please help.

If DLINK requires careful startup sequence to work, it stands to reason that either the module is bugged or the auto startup features is bugged. Edit: I was able to get data link working with both auto and manual startups, but not for every mission. Still investigating, could relate to mission instead of aircraft.

Yes, tested outside hanger, on runway and in the air. Yes, DLINK shows GPS Time and Fine.

HSD, not HSI, sorry. Edited post. Bottom right on your image.

I'm new to F16 and trying to play a campaign. I can't get the data link elements to display on the HSD, or anywhere else. I am using auto start, which could be an issue, after reading thread: Which suggests there is special order during startup, which may not be honored by the auto start sequence "...the MIDS switch, which you have to put from OFF to ON after the alignment is done (not before) for Datalink to work." If so, is there a way to 'fix' this after startup? I have seen a fix which involves turning data link off then on again via the LIST -> DLNK screen. This has no effect. Everything else appears to be in the correct state. Edit: Repro steps: Show working: Instant Action -> F16 -> Caucasus -> Ready on ramp Observe friendlies on HSD, at least after they take off after a short time. Show not working: Instant Actions -> F16 -> Caucasus -> Cold and dark Press Auto startup Observe no friendlies on HSD, all instruments set to expected states. Edit: I can get the Datalink working with auto startup.

Posted similar over here:

+1 wanted to request the same, after not being able to see the ground through all the icons

Thanks, I'll try again. I thought I had checked the F-10 menu and found only ATC available at that time. EDIT: It's also possible I needed to put the primary radio back to channel 1 to see the Instructor option.

Trying the tutorial at the moment with the first F-18 slot. Can't click 'Request Takeoff' from Tower. Option is present, but won't click. Possibly because another F-18 snuck out ahead of me and is blocking the ramp?