Picture on Panasonic tx32lxd1

Hi, Recently purchased this TV.

Having problems watching football on this TV. Having viewed at 2 locations.

The first was through a sky box and whenever there was movement there was no clear definition around the players.

The second location is through a standard ariel (flatted development, don't know what type of ariel it is). Same problem as the first location but not as bad. The picture appears to be best when the tv is set to the analogue setting. Not as good on the digital setting, but neither great.

Could it be the aerial ? Do I need to install a digital aerial or a satellite dish ?

Or is it something to do with progressive scan ? I have a JVC dvd/video combi but this is a year old and I have no idea if this is progressive scan compatable.

thanks

Davy