[Lowfer] LF ham bands

[Douglas Williams]

Haha, it's been a few years since I messed with WSPR. Downloaded the new
WSJT-X software, Googled what frequency and mode to set the rig to for 630
meter WSPR2. Loaded it all up, and while I was resetting my password to
WSPRNET (I forgot it, of course), by the time I got logged on, I had
already decoded a station, in the middle of the afternoon. :-)

https://i.imgur.com/Za4C1ep.png

On Fri, Oct 16, 2020 at 1:03 PM Douglas Williams <williamsdoug1966 at gmail.com>
wrote:

> 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
>>
>