Comment by kaiken1987
7 days ago
Cardo uses a similar tech for a dynamic mesh network, using Bluetooth I think, in their helmet comms. So if you are out on motorcycles or ATVs you can still talk without needing a cellular network. It makes things a lot more stable and not use any data. In these scenarios you'd struggle to talk face to face wearing helmets without some sort of comm. So if you can remove the need to buy a specialized comm device to do it, sounds great.
You can't. Smartphones are Class 2 devices (weak), and you must use radio the way firmware let's you.
Purpose-built hardware is Class 1 (much stronger, 100 mW/20dBm vs 2.4mW/4dBm), and they can use sophisticated protocols to keep the connection stable. And that's Bluetooth.
If they're not playing Bluetooth but go general ISM, they can emit whole 1W on 2.4GHz or 915 MHz.
They're not really alike.