[Elecraft] [KX3] Adding TX/RX "Relay" to KX3 Operation

[John Huggins, kx4o]

All,

Oh the things that come up for Field Day with just weeks left to prepare.

Say someone commits to bringing a "mighty-fine" RX only electrically
steerable antenna of some sort to field day 2016.  Not wanting to be
forever mechanically switching between TX and RX antennas...

How would you approach adding an automatic TX/RX swtiching capability to a
KX3 operating QRP?

Would you consider some sort of "diode" switch or stick with good ole
mechanical relays?

I have my thoughts, but thank you all in advance for yours.

John, kx4o