3 ms·
I'm surprised that it is not possible in US to buy air time on commercial stations for exclusive use of the buyer and their customers. Surely it would be simila
by PoachedSausage 6y ago
I'm surprised that it is not possible in US to buy air time on commercial stations for exclusive use of the buyer and their customers. Surely it would be similar to buying an advertisement.
Here in the UK we already have data transmission over AM radio[0], nominally for remotely switching electrical equipment on and off but could be used for anything that only needs a low data-rate channel. I would not be surprised if the HFT people are using it.
[0]https://en.wikipedia.org/wiki/Radio_teleswitch https://en.wikipedia.org/wiki/Radio_teleswitch
- alexpil 6y agoAM radio (medium-wave/long-wave) is different from shortwave. In US, similar "utility response" is permitted as well for AM broadcasters, since 1981 https://docs.fcc.gov/public/attachments/FCC-81-258A1.pdf https://docs.fcc.gov/public/attachments/FCC-81-258A1.pdf Subsequently, permission was granted to all AM and FM broadcasters for "subsidiary communications" of any kind, https://docs.fcc.gov/public/attachments/FCC-84-113A1.pdf https://docs.fcc.gov/public/attachments/FCC-84-113A1.pdf But that's not "shortwave"/International HF broadcast