Let me add a few tidbits here as a nice discussion on sea gain seems to have begun. At 24 kHz, vertically polarized signals become pretty much unreadable with the best technology about 25 feet under
Peter, AMRAD conducted several winter trips to the Outer Banks of North Carolina to listen to LF signals in the days before transatlantic amateur signals were common. The Outer Banks are a long narro
Franks interesting bit about reception in NC refers to 770khz - a long way from 136 - which in turn is a long way from the navy/submarine freqs. (anyone know what the navy freqs. are ? ) From the si
Aren't we being a bit imprecise here? LF sigs are used by submarines submerged because the sea is transparent at lower frequencies. If that is so then there is no (less) reflection at the surface the
Sorry, I made a most ennoying typo : snip..... " Does sea again ( if any at all ? ) and low man made and evironment noise add substantially to the LF performance ? " snip..... While I meant to write
From either an engineering standpoint or a scientific standpoint, I'm not very comfortable with the term "sea gain" being applied at LF. The sea is vastly less lossy than land--conductivity of 5000mS
