[Lowfer] LF ham bands

[Douglas Williams]

I think I'll just leave everything set to automatically decode and upload
WSPR on 630 meters while I work 12 hour shifts the next three days. Let's
see what happens.

D. KB4OER

On Fri, Oct 16, 2020 at 3:09 PM Douglas Williams <williamsdoug1966 at gmail.com>
wrote:

> 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
>>>
>>