Hi i got old HD astro decoder(before pvr one).

Does having an old decoder effect on the screen ratio on non-hd channels (such as TV3 and Ria) to become 4:3 only with black bars/pillars. I always come to my neighbour's house(with a much newer decoder) and they always show 16:9 ratio on all channel without any cutoffs/stretching from the original channel.

How eh? Thx