[Elecraft] K3 Rcv Ant question

[hank k8dd]

I got an answer to the second question (RX filters in the RX IN/RX OUT 
on the XVTR board)

Now for the first question from a Multi/Multi friend:
How many dB of isolation are there between the main antenna ports and 
the RX antenna ports?  I ask because on my current radio (an Omni 
VI), the noise floor when listening on my 'aux' antenna is raised when 
my transmit antenna is connected to the main antenna port.  Of course, 
there are outboard devices and other mods to help this problem, but I 
wondered how well the K3 handles this without 'help'?

73    Hank    K8DD