My NW/SE BOG suddently went dead. It had 30 dB less signal than on the NE/SW BOG. After inspection, I found the obvious reason:

and then this one was the “final straw”:

Added a fresh piece of cable there and all is well again. However, I definitely need to get better/thicker cable for my BOGs so that mice can’t chew them through.

Update: There are apparently wire coatings that are either rodent proof or have some chemical added that they taste bad. Need to look into this.