[Elecraft] K3 KXV3A RX Ant

[Sam Morgan]

I have not yet installed a KXV3A, however I have been trying to read the manual, 
but am still confused on this point:

If I have *ONLY* the K3 with the main receiver, with the KATU3,
does that mean I could connect one antenna for strictly TX,
or even a TX/RX antenna to,
either the Ant1 (or Ant2) connection on the KATU3

and then connect a different RX (only) antenna
to the KXV3A RX Ant IN connection

now here is the point of my confusion.....

does this mean when I key the K3 to transmit
it automatically switches to the TX antenna
and when I (or the vox) unkeys the K3
then the K3 automatically switches to the RX (only) antenna?

or do I maybe have to have the KRX3 second receiver installed
to have what I am wanting to do above?
-- 
GB & 73
K5OAI
Sam Morgan