Repeat again?

[Nessie]

Hi,
I've heard from many of my teachers that we can never use "repeat again", but when I check it in the BNC, I found that it is used quite a lot:

http://sara.natcorp.ox.ac.uk/cgi-bin/saraWeb?qy=repeat+again

Many thanks
Nessie
_________________
:(... something we never have again, I know... I guess I really really know.. :(

Sorry seems to be the hardest word...

[Torsten]

I think 'repeat again' is a bit of a tautology which doesn't mean it's not used. It's simply that it might not sound very good.

TOEFL listening lectures: Why does the professor mention Cygnus X-1?