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Maciej Grela maciej.grela at gmail.com2010/10/6 Marten Christophe <technosabby at gmail.com>: > Hi Peter, > > Thanks Sébastien, > > Thanks Benjamin, > > It looks some useful let me understand this > > Yes , I'm alone for this project as my NGO's planned for installing the, > course-ware and distribute them. > but I'm insisting , this interactive feature , and hardly i get permission > for pilot work > > and no one here from Telecommunication field , and as technical as I'm. if i > could not prof my self they will go as previous plan. > means students have to visit nearest center for help. > if i successful demonstrate only then the company who is manufacturing this > will be ready to install compal hardware within it > we can't insist them also coz they are working on this project for no loss > no profit. > > > Thanks all for help, i will PM you from next time , if i need any help from > you , coze i dont feel this mailing list is right place to discuss this, > > before Harald scold me i should pack-up :) > >>If all you looked at was legacy solutions with too low bandwidth for >>your needs then obviously you should look for further solutions. :) > Forgive me for my english Legacy means proprietary equipments, solutions > and technology. > and deliver more bandwidth then required. so its useless spending money.. > when you already in lacking. > already modification to $10 OLPC hardware reached it around 6 times high.( > to accommodate course ware for intermediate schooling and player) > this is not as same as OLPC. it's much facilitated.(i should not disclose > its under development) >>I don't believe your idea of amateur radio is very accurate. Actually >>I don't think amateur radio has ever been about one way >>communication. :) Broadcasting is, but maybe that's also something >>your application can benefit from if governments help with spectrum. > I don't mean to say it cant, communicate bi directional, but limitation is > there , who will tune it ? in remote villages, > also how costly it will to provide a ameture or hame radio set to each > student? > where as the compal mother board only ( dont need LCD, keypad enclosure) and > as i searched they have it in production until 2009 > might give me under $5. at least i can gather 10-15 from obsolete , > repairing even junk seller shops form my pilot projet > so i drooped the Idea. > there are few contries where even in single region more then 4-5 > regional languages spoken. > > initially we will start 2 regional language channels on each TS of a single > ARFCN, in just 200KHz b/w, we have 7 TS. > means 7 channels, every regional language will be associated to specific TS > and ARFCN, will be configured at the time of production. > for pilot project. > think it like this , One lecture being broadcasting on TS-1, 20 students > are tuned to it. In the same ARFCN one TX slot free and they will use it to > ask question , and it will obvious that students ask question one by one, > even in normal classes. > > so i don't need continuous two way communication. , transmitting part will > be shared among all 20 or more. > Aren't you reinventing PoC (http://en.wikipedia.org/wiki/Push_to_talk) ? It may prove easier to base your work on that. Best regards, Maciej Grela