John, Cannot do that, but if you have the KXV3 installed, you can use the RX antenna input. There is benefit in that approach - you cannot transmit into your receive antenna and its preamps are safe. 73, Don W3FPR On 2/29/2012 1:34 AM, WB9JPH wrote: > How do I set up my single receiver K3 to transmit on ANT 1 and Rx on ANT 2? > >