Some hft firms are rumored to be using short wave radio. Everything old is new again. https://hackaday.com/2018/05/12/hft-on-hf-you-cant-beat-it-for-latency/ h

Some hft firms are rumored to be using short wave radio. Everything old is new again. https://hackaday.com/2018/05/12/hft-on-hf-you-cant-beat-it-for-latency/ https://hackaday.com/2018/05/12/hft-on-hf-you-cant-beat-it-f...