Radio over LTE (internet)

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Created: 2024-08-17Updated pending 2024-09-20 with info on radios with dual SIM cards and Zello application Why did I write this article? Well I kept getting asked questions about them (especially Rapid Radio who have been relentless in their advertising), like how they work and what's different between them and apps like Zello. So I did some digging, ask them some questions, which they never replied to when I asked on Facebook where there ads are all over the place (I see them several times a day!). Of course they also took full advantage of the large scale AT&T outage and other disasters to promote that their radios will work when cell phones won't. That last claim really got me investigating as I know a little bit about cell technology as I currently work on the IPAWS program. A Little Technical Background LTE is a standard of digital communications adopted by most countries and is used in cellular phones, or wireless data networks and was introduced in 2010. The specifications call for downlink peak rates of 300 Mbit/s, uplink peak rates of 75 Mbit/s and a transfer latency of less than 5 ms. This means it can handle fast-moving mobiles and supports multi-cast and broadcast streams....