[Elecraft] Problems activating VOX in Data Mode

[Morgan Bailey]

Hi all

I've got an unusual problem.  I'm primarily a CW op, but lately I have been
playing with RTTY and PSK.  One thing that I've noticed is that I don't
seem to be able to activate VOX when in Data Mode on 20 meters.  This works
fine on every band, but on 20 meters it displays an N/A when I try to
activate it.  I'm sure there is something obvious that I'm missing here.
Anyone have any ideas?

Thanks

73, NS0R, Morgan