3 ms·
Do you need a gateway to access the internet. I understand the problem of FCC, don't want to use the wrong frequency, but it seems even if your device can live
by jcun4128 9y ago
Do you need a gateway to access the internet. I understand the problem of FCC, don't want to use the wrong frequency, but it seems even if your device can live forever it depends on an existinng network.
When I think of wireless communication in the wild I would have to buy a GSM module and subscribe to at least an SMS service.
Is there such a thing as free communication that isn't regulated. Maybe that's what Walkie Talkies are but assuming "internet like purpose" or at least remote in/out.
That would be cool though just connect to it assuming your device could interface with it (spread spectrum?)
I think I saw something about phones being able to make their own local networks as they're able to transmit like up to a mile. It was I think related to apple phones.
Edit: to try to clarify what I mean by gateway, to connect to the internet need an ISP, not talking about the TCP protocol but literally have to "be allowed" to communicate. I know sounding like a conspiracy person I don't know how to explain it. Also I understand towers transmot far, intercontinental cable,satellites not saying to replace that.
- retSava 9y agoYou need a gateway more or less since the devices don't use the same physical means of communication as the other ones on the network. The mesh network devices in this post use a 802.15.4-compatible radio, which doesn't work with wi-fi on a physical layer, so the gateway translates this (and IPv4 <-> IPv6). All RF communication is regulated (broadly speaking). On the relevant freq. bands here, the ISM bands on 868/915 and 2.4 GHz, the bands are unlicensed (you don't need a license) but you have to comply with certain rules. You must not send too strong, or too much, or occupy too wide freq. band. You must be able to cope with other transmitters. Re phones and connections, I think what you mean is ad hoc mesh networks using the wi-fi that the phones (and laptops) have built in. Then you get a network in which the devices can communicate with each other (share files, messages,etc), where they otherwise might have required internet to reach eachother. It's a different (but interesting) thing...
- jcun4128 9y agoThanks a lot for the information. I had a relevant experience with regard to video piloting you are supposed to get an Amateur Ham license and then not transmit (supposedly) more than 25mW but many of the transmitters are close to 1W if not more and depends on antenna design like helical. Anyway lots of information here thanks.
- luma 9y ago> Is there such a thing as free communication that isn't regulated. Maybe that's what Walkie Talkies are but assuming "internet like purpose" or at least remote in/out. Take a look at LoRAWAN. You can stand up your own gateways and activate devices without involving a third party or paying licensing fees. TheThingsNetwork operates a popular gateway federation service which is also free, so you may find that there are accessible gateways already running in your area which you can use today, permission and $$$ not required.
- jcun4128 9y agoThanks for the tip I will keep that in mind. It is a good point regarding the device's built in hardware regarding communication.