It's not quite that straightforward regarding the polarisations of some transmissions in Europe these days. Those which were horizontal tend to have become mixed. Not all local stations are vertical either. Generally speaking you can expect the higher powered regionals to be received better with a horizontal aerial. Some of them are mixed though, which means that you should still get plenty of signal if you are vertical.
The mixed transmitters in Belgium and Holland tend to give me slightly more signal when I'm horizontal.
Again, generally speaking, local continental stations tend to be vertical, but there are a few exceptions. Best thing is to check the polarisation in FM List.
As for slant polarisation, I have been disappointed with this. I don't know the facts about losses compared with horizontal and vertical when using slant (I have heard the 3dB figure too), but I tried this myself and even moving 30 degrees away from H or V produced sufficient loss of signal to make me want to avoid slant, full stop. A poor compromise, sadly, as I expected slant could have been really useful. Hopefully others might have had more luck with this - please let us know your findings if you have used slant to good effect.
The mixed transmitters in Belgium and Holland tend to give me slightly more signal when I'm horizontal.
Again, generally speaking, local continental stations tend to be vertical, but there are a few exceptions. Best thing is to check the polarisation in FM List.
As for slant polarisation, I have been disappointed with this. I don't know the facts about losses compared with horizontal and vertical when using slant (I have heard the 3dB figure too), but I tried this myself and even moving 30 degrees away from H or V produced sufficient loss of signal to make me want to avoid slant, full stop. A poor compromise, sadly, as I expected slant could have been really useful. Hopefully others might have had more luck with this - please let us know your findings if you have used slant to good effect.





