Why is ILS info in the PFD yellow?

[Vauban 0]

Hi, here's a nice easy one for you PMDG experts...On the PFD of my 737-700 NG, the ILS information in the top left-hand corner giving the ILS's ID and its approach course is often yellow and appears to be struck through.What is yellow trying to tell me?Thanks for your help.Geoff

[downscc 1,327]

I've notice that too... and that it always turns normal (green on my display) when I'm within a reliable range of the navaid. I've assumed that the yellow line-through meant the signal was not reliable, same as a flag on steam gauges. Although not useable, it is still useful because I learn what the FMC expects the final course to be, which is often a degree or so different from current charts.

[Vauban 0]

Thanks for that, Dan. The time I last remember seeing it yellow was when I was on the ground at the airport. I guess the signal isn't great on the ground.Geoff