...also the manual says for best protection do not use antenna position one and to instead put a pl259 connector with the center and ground shorted. Cant put My head around what they are doing with that either...
That's pretty clear without seeing the manual. I assume that position 1 is the default position
selected when the power is off. Rather than an antenna, putting a ground jumper there shorts
the coax to ground for protection in the off state, and none of the antennas are connected to
the center conductor of the coax, which gives you a little bit more protection. (Not that a
lightning bolt that has traveled a couple miles through the air won't also be able to jump
across the contacts, of course.)