[Elecraft] K3 and linear amplifiers

[JACrux]

QSK requires that an outboard linear is somehow switched into transmit mode, 
preferably before RF arrives at its input socket. In the case of my TenTec 
Hercules II amp, a control signal is fed back to my Omni-V to tell it the 
linear is ready to receive RF drive. The Hercules uses a vacuum relay; there 
are fast and slow QSK options built into the Omni-V. Will the K3 accommodate 
this kind of interlocking ?