I am building a very low frequency ( radio ) receiving system for
monitoring natural spherics and for the possibility of receiving direct
emissions from meteors.
As I tune in acutely I find I am receiving transmissions from something
called the Russian Alpha navigation system. Info here:
http://www.vlf.it/alphatrond/alpha.htm
These transmitters broadcast constantly at around 11-14 kHz. I am
wondering if marine sealife ( like whales for example ) can hear these
signals naturally?
I posted a sample webpage here with audio of the signals. The signals
are very faint patterned tones so you might have to turn your speakers
up high to hear them.
http://www.heliotown.com/VLF_Alpha/20090207_Ashcraft.html
I have no idea if sealife can hear this stuff as I am just pondering. =
But I must say that the constant high pitched signals like these might
be irritating if an organism had to hear them all the time without
escape from them.
Thomas Ashcraft
New Mexico
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