Can anyone recommend a portable tv aerial for use in trucks?

I have a portable digital tv, it has the telescopic analog aerial attached & an aerial for the digital. However i seem to be having problems getting any signal wotsoever . It works great at home & some places i go i get a good reception but most places i cant get any signal!
Does anyone recommend a good aerial to buy as i dont want to waste my money?
Thanks

Best tip is to get it out of the tin box.

Buy an aerial extension lead and get the aerial ten feet away from the truck and it should work fine.

hi try maplins i got one there looks a bit like a leaf on a stand works off 12v or mains runs mine ok get 20+ stations most of the time cost 19.99
hope that helps

omnimax or status roof mounted from cdc and both are digital ariels a few lads at my firm have em and get all the chanels where digital is availble theses ariels are about 60 or 70 quid
try cdc at www.truckstuff.co.uk