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Project:Packet Radio: Difference between revisions
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The TNC takes a chunk of data, splits it into packets, and sends it over VHF/UHF, and a TNC on the other end decodes, error-corrects and delivers it. TNCs are also digipeaters, repeating traffic for a further-flung station. An adaptation of the AX.25 protocol is used to handle many TNCs using one frequency. The result is an error-corrected, transparent and automatic network. Such networks are still in use; [http://www.aprs.org/ APRS], a protocol to share tactical information and short messages, is built on top of packet. | The TNC takes a chunk of data, splits it into packets, and sends it over VHF/UHF, and a TNC on the other end decodes, error-corrects and delivers it. TNCs are also digipeaters, repeating traffic for a further-flung station. An adaptation of the AX.25 protocol is used to handle many TNCs using one frequency. The result is an error-corrected, transparent and automatic network. Such networks are still in use; [http://www.aprs.org/ APRS], a protocol to share tactical information and short messages, is built on top of packet. | ||
Some TNCs had a feature whereby you could leave messages for their owners. Bulletin board software began to develop partly out of this, allowing one-to-one message exchange and posting on forums, real-time chat, distributing news and data, and whatever the operators of the BBS want to offer. The scene may be quieter, but it isn’t dead. [http://g7vja.co.uk/ Ten or so packet BBSs] still exist in the UK. | Some TNCs had a feature whereby you could leave messages for their owners. Bulletin board software began to develop partly out of this, allowing one-to-one message exchange and posting on forums, real-time chat, distributing news and data, and whatever the operators of the BBS want to offer. The scene may be quieter, but it isn’t dead. [http://g7vja.co.uk/novbbs.htm Ten or so packet BBSs] still exist in the UK. | ||
Several of us on the [[Amateur Radio]] IRC channel expressed an interest in setting up and managing a BBS, perhaps even on a local packet network. We’ve been talking about what other fun features beyond message passing we could implement, like Richard Osgood's [http://www.richardosgood.com/blog/how-to-setup-a-raspberry-pi-packet-radio-node-with-zork/ BBS that allows users to play Zork]. We might be able to reach quite a lot of people from a central London location. However, we’d need somewhere with decent coverage and we’d also need a full license to run an unattended node. Furthermore, to repeat or rebroadcast other peoples’ messages we’d need a Notice of Variation. | Several of us on the [[Amateur Radio]] IRC channel expressed an interest in setting up and managing a BBS, perhaps even on a local packet network. We’ve been talking about what other fun features beyond message passing we could implement, like Richard Osgood's [http://www.richardosgood.com/blog/how-to-setup-a-raspberry-pi-packet-radio-node-with-zork/ BBS that allows users to play Zork]. We might be able to reach quite a lot of people from a central London location. However, we’d need somewhere with decent coverage and we’d also need a full license to run an unattended node. Furthermore, to repeat or rebroadcast other peoples’ messages we’d need a Notice of Variation. | ||
