[Lowfer] LF ham bands

[Douglas Williams]

Thanks, that is truly fascinating. I actually received W4DEX's 8822 Hz
signal a few years ago at a distance of 210 km using nothing but ARGO and
an active whip antenna. You can see my screen capture here on his page,
along with other, far more impressive receptions at greater distances, and
even overseas:

http://w4dex.com/vlf/8822hz_dec14/

I wasn't aware experimentation was still ongoing on VLF. I may check those
lists out.

I remember when I was "whistler hunting" in the 1990s with a receiver I
built from a kit (designed by Mike Mideke), I could hear very strong
signals from the now decommissioned Omega navigation system at 10-15 kHz.

Going even lower in frequency, the US Navy used to have a ELF transmitter
at Clam Lake, Wisconsin, used for submarine communications, that operated,
IIRC, at a frequency of around 72 Hz. Fascinating indeed.

https://en.wikipedia.org/wiki/Project_Sanguine

73 de KB4OER





On Fri, Oct 16, 2020 at 12:37 PM Johan Bodin <jbodin at jbodin.se> wrote:

> There's also some amateur activity going on at VLF. Amateurs have
> crossed the Atlantic ocean with sub-9kHz signals. You may wish to look
> at the group VLF at groups.io <mailto:VLF at groups.io> (https://groups.io/g/VLF
> ).
>
> 73 de SM6LKM
>