Today i bought this tuner and it works perfectly with windows 7 and when car's stopped.

While i'm driving every single signal is lost and i cannot watch TV and i cannot even listen to the radio.

When i first installed its drivers and scanned for channels, both on tv and fm radio it returned no results so i had to manually save them!

This problem seems to be due to high signal threshold. I mean the antenna which comes with the usb stick isnt as sensitive as it had to be!

So i'm trying to find an antenna to buy which is tested from other users and works perfectly in stopped or moving car! Unfortunatelly i cant find any technical reference on the antenna type. this is the link of my product

Any ideas of a better antenna? Preferably an antenna which can keep signal above the lowest signal in order to watch DVB-T without "scratches" and listen to the radio smoothly!