orca, I am not certain but I suspect the main force was silent with only picket ships radiating
I remember the TV reports from the TF having rhythmical interference, every 5-10 seconds, which I always assumed was from a rotating antenna. Regarding the siting of the AAA, about 3 years after the conflict there was evidence of a position on the promontory at the south end of Surf Bay - looking on Google Earth it would have been a good place