[Elecraft] KPA-1500: What is it telling me?

[N4ZR]

I have a dummy load on Ant 2 on my KPA-1500.  When I have Ant 2 
selected, on any bandI cannot select just "In."  When I hold the button 
to change ATU Mode, my only choices are BYP or BYP and IN both showing 
simultaneously.  What does the latter mean?

-- 
73, Pete N4ZR
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