I see people in the Wally sub topic have said lower frequencies--say, 27 MHz versus 49 MHz--theoretically should
have better range.

I don't have one sub of each frequency to compare side-by-side, but I remember talking with an ex-submariner
friend.

I guess he may have been transitioning off the boats--about to get out of the Navy after 12 years--when
he worked at a radio facility for talking to the submarines.

I remember he said storms around the power lines had eerie effects because of the really low
frequencies used to reach the subs. I don't remember whether he said ULF or ELF. In "Hunt For Red October"
I seem to remember a line about a transmission coming over the ELF. Maybe ULF was long-range and
the ELF was short-range?


Anyway, that the Navy uses super-low frequencies for subs kinda suggests 27 MHz might have a bit more penetration
power than 49MHz.