I was rearranging this receiver today and happened to notice that there are two LEDs to the right of the numeric display. I searched all of the online documentation and didn't find any explanation of their purpose.

It's apparent that the green LED identifies when a valid/locked signal is present. But, I've never seen the red one illuminated.

I don't think that it'll effect the balance of world power or anything, but I'd like to know what the red one is for.

thanks in advance,

FMW