Does anyone know what type of F M aeriel to use on the outside of the building / house in Bangkok . I've installed 3 types with coaxil also one for cars to the stereo reciever and still not all stations are clear and a lot of interference .

Thanks in advance

Are you using a US standard tuner by chance? They will not tune all channels correctly as the frequency spacing is different.

Also, depending on where you live, there could be serious multipathing and reflections off buildings that really messes up FM signals.

Also, depending on where you live, there could be serious multipathing and reflections off buildings that really messes up FM signals.

also - stations are located in different directions and there are many of them;you have to make your choice and point your anthena or anthenas properly.

like terestial tv anthenas.fm dipol is quite large.

a piece of wire out the window

a piece of wire out the window

It works well very often - "out of window" is the clue.