[RTTY] ft-847 on rtty?

[Mark n2qt]

I'm hoping someone can save me some time (frustration) on this one.

How well does the ft847 work on rtty.  I know it has to be afsk which 
doesn't
bother me (much) but what about filters?  Can you select the narrow cw
filter in a data mode?

(I realize this won't be a competition grade radio, but since it's small and
has 2/70cm in addition to HF it could be a nice addition to the permanent
setup here).

Mark n2qt