NO. As a 34-year veteran RF design engineer, I can tell you that there is NO COMMERCIAL 900 GHz radio. NONE. Anyone telling you that is a LIAR.
I'm a HAM though I don't have 900mhz capabilities to test if this is true or not. If it's true however, I'm shocked (not) the ARRL hasn't launched a lawsuit or protests to stop this.
From the CNET Article:
Amazon Sidewalk taps the 900MHz band of the radio spectrum -- typically used for amateur radio -- to extend the distance at which you can control your smart home devices, Dave Limp, senior vice president of devices and services said during the event. This could have a lot of implications for smart gardens, outdoor lights and mailbox sensors.
You're 100% correct there's no Commercial 900ghz radio frequency, I suspect the original poster had no idea what they were talking about.
There is however a 900mhz spectrum allocation in the Amateur Radio Service that Amazon is infringing upon if this article is accurate.
What is your point? All the wireless telephones that people use around their house are in the 900 ghz range, there’s no commercial license required.
I was thinking the same. That’s microwave to IR range.
I am sure the poster meant MHz.
Hertz was a fine fellow but I still megacycles better.