[Elecraft] K# and FSK

[Terry Burkholder]

Trying to get my new K3 set up to work FSK.

When I set DATA MD to FSK D the radio transmits OK but I get no audio 
out of the LINE OUT jack to see  received RTTY signals.

When I set DATA MD to DATA A  I get audio out to the LINE OUT jack and 
can receive fine but the radio will not transmit FSK.

I am sure I have missed something but can't figure out what it is.

Thanks for the help
73 Terry N4TB