[Elecraft] Diversity RX with K3 + Sub RX

[dm4im]

Elecrafters,
i recently bought a used K3 with Sub RX and KAT3A internal ATU. I've 
enjoyed Diversity via SUB RX on my older K3, but never had the bells and 
whistles of the ATU.
So with -say- a vertical Antenna attached to Ant1 and a Dipole to Ant2, 
i can receive Diversity (if distance between them is sufficient) . Can i 
assign TX to Ant2 and still receive Diversity?  Is there a macro for that?

73, Martin