ILS gauge question

[TeaSea]

Well, we lost our NDB at my local airport....the local authority refused to put it back up after a storm damaged the antenna....so I guess they will all go slowly away....still make approaches on KLAL's though. I'm sort of partial to NDB approaches because for some reason, I'm good at them...I really don't know why either, but I come out dead on every time.

Ken, you made the point I was trying to...which is in the range advantage in some situations. Also, while atmospherics do play a role in HF propagation, terrain has less of an impact than over VHF/UHF, and atmospherics do affect those bands also, although certainly less dramatically. However, my other point was GPS issues in northern latitudes, where coverage is problematic.

At one time I know GPS was very unreliable up North. Perhaps that's changed in the last few years.

 

[fliger747]

Before GPS it was handy in a light aircraft to have a ADF as one could find town by tuning into the 50,000 watt Religious station..... GPS seems to work OK enough in the US Arctic. I have flown over the pole many times and we seem to do OK up to 75-80 North. Varies....

They are useful as compass locators in some places like Africa where you sometimes have to fly a real approach including procedure turn. A backup to make sure you are really on the localizer... or the right one.

T