In the upper left corner of page 419 of EotE Core book, it mentions a Atgar 1.4FD P-Tower weapon. Yet I can't find any stats for such a weapon.

I thought it was listed somewhere in there, but I can't find it either, so I guess it wasn't statted since it's not actually supposed to be used against the players in the adventure. Since it's the "Radar dish" cannon from the battle of Hoth we're talking about, it's actually pretty easy to guesitmate some stats:

Something in the ballpark of

Sil2, Armor 1, HT 4, SS 2, 1 Turret mounted light blaster cannon.