[Milsurplus] LF, VLF, ELF, SLF, and DC

[David L. Wilson]

> ----- Original Message ----- 
> From: "Bob W7AVK" <rsrolfne at atnet.net>
>
>> Hank - Years ago in the early 1970s I had the opportunity to visit
> "Jim
>> Creek" one of the Navy's million watt ELF stations located north east
..
> I saw this in a book "Antennas" by  Lamont Blake, re NLK at Jim
> Creek,
> Washington state, 24 kHz:

Two comments...They use 24.8 kHz (NAA in Cutler uses 24.0 kHz) and that is 
VLF (3-30 kHz) not ELF (300 Hz-3 kHz, with ULF being 30-300 Hz).  These are 
the ITU definitions.  Though some call both ELF and ULF as ELF, that is not 
within the technical definitions; but no one refers to 24 kHz as as ELF.