[Elecraft] Factory-assembled K3 with KAT3 and KRX3

[AC6JA at aol.com]

Do you know if the factory-assembled K3 with the optional KAT3 and KRX3  
subreceiver comes configured with the subreceiver antenna connected to the 
KAT3  or the AUX RF antenna connector?
I just ordered one and was reading the manuals and I guess it can be  
connected to either one.
Thanks.

Mike  AC6JA
K3 # ????
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