An NDB is a Non-Directional Beacon. An Automatic Direction Finder (ADF) will pick up the NDB station and will simply point to it.

While you're flying tune the ADF to the NDB station. The needle will point to it. Following the needle will take you directly over the station.

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Are you really sure about this?
I thought it was the other way round.
I fly frequently to Funchal, and the have the FUN VOR (112.20) and the MAD NDB (318 ) avaliable for navigation. My aircraft will ALWAYS pick up the VOR signal first

The main advantage with VOR stations is that you can find what radial you're on and with a DME you can get your distance from the station. With an NDB, all you get is a heading to the station. Unless you can triangulate with a secondary station you can't pinpoint your exact location

There are VOR stations out in the middle of nowhere, and a lot are located on airports. They're easier to find with them

Cost is one factor. An NDB is an AM radio station. At the school where I used to instruct, we used the 740am station(a series of towers) to practice holds and approaches. The ADF needle homes on the station, just as it would any other NDB transmitter. AM stations, by my understanding are cheaper to build, than VORs. That may have a lot to do with LOCATION, fredri !

As far as range, I have been told that, the higher the frequency the stronger the signal, but I don't know if that's accurate, or not. I do know that some NDBs DO have a greater range than the typical VOR, and this is even depicted as such is F$.

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On long distance flights, try using an aircraft with an RMI, and set your ADF to an NDB or MB at your destination, you'll find that SOMETIMES, you will begin to see needle movement and then course guidance, before the VOR.
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