[K3CAL] HF Radio Stock trading; Coming to a frequency near you!

[Norman Dorn]

I played with this stuff 10 years ago.  I looked at the 500 kHz frequency
band, with a 10kHz splatter and very short messages.

The modulation options here are consistent with amateur experimental
services call signs (as reported here).

I thought about using the towers on the point across from the Naval Academy.

Extended messages would tend to defeat the transmission advantage.

- Norman

On Sat, Jan 10, 2026 at 3:14 PM Shawn Donley via K3CAL <
k3cal at mailman.qth.net> wrote:

> FYI
> Coming to a HF frequency soon near you soon, maybe on top of your
> frequency if they goon up the modulation.
>
> It has been tested that stock trading over HF radio is 9 milliseconds
> FASTER that sending the transmission via undersea cable/fiber  in
> conducting trading from the USA to Europe
>
> You may see some of this on your waterfall displays as the wide band
> signals butt right up to the edge of the amateur bands.  One emitters data
> says 14.000-14.990MHz which I hope is an error.
>
> https://www.udxf.nl/HF-Trading-Stations_03AUGL2023.pdf
>
>
> ----------------------------------------------------------------------------------------------------------
>
> High-speed trading, formally known as
> * High-Frequency Trading (HFT)*, is a form of algorithmic trading that
> uses powerful computer programs to execute a vast number of orders at
> extremely high speeds, often within microseconds or milliseconds
>
> How High-Frequency Trading Works
>
> HFT firms leverage advanced technology to gain a speed advantage in
> financial markets. Key components include:
>
>
>    - *Algorithms:* Complex, pre-programmed instructions that analyze
>       market data, identify trends, and make trading decisions instantaneously.
>       - *Speed:* HFT systems prioritize ultra-low latency, with the goal
>       of executing trades faster than competitors. This can involve using
>       specialized hardware and high-speed connections like microwave transmission
>       networks
>       .
>
>
>    - *Co-location:* HFT firms pay exchanges to place their computer
>    servers in the same data centers as the exchange's own trading systems.
>    This physical proximity minimizes the time it takes for an order to travel,
>    an advantage measured in microseconds.
>
>
>    - *High Volume, Small Profits:* The strategy involves making tiny
>    profits on each individual trade, but accumulating substantial overall
>    gains through the sheer volume and speed of transactions.
>
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