At 10:46 AM 2/13/02 -0500, you wrote:

>>The ELF transmitters in northern Russia, Michigan and Wisconsin are
>>almost *beneath* the audio range (< 100Hz!).
>
>NONSENSE!  They are <100KHz!

Hard to argue with that, as 82Hz (the Russian frequency) and 76 Hz (the
American frequency) are both < 100Hz AND (way) < 100kHz. ;-)

Here's a page, direct from the US navy on the Wisconsin transmitter:

http://enterprise.spawar.navy.mil/spawarpublicsite/docs/fs_clam_lake_elf.pdf

There is another "band" below ELF, called ULF that starts around 30Hz, but
I don't know if it has any practical use.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
9/11 United we Stand

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