Japansex 3g

The first 3G networks were introduced in 1998 and fourth generation 4G networks in 2008.Several telecommunications companies market wireless mobile Internet services as 3G, indicating that the advertised service is provided over a 3G wireless network.

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3G finds application in wireless voice telephony, mobile Internet access, fixed wireless Internet access, video calls and mobile TV.

3G telecommunication networks support services that provide an information transfer rate of at least 2 Mbit/s.

Fessenden said into his microphone, "One, two, three, four. December 12, 1901 Marconi's wireless communication across the Atlantic a distance of 3500 kilometres from Cornwall, England to a receiving station on Signal Hill overlooking St. (possible the letter "s" in Morse code) October 1902, The first Verifiable transatlantic radio transmission was made during from Poldhu, Cornwall to the Italian cruiser Carlos Alberto anchored in the harbour of Sydney, NS with Marconi aboard. 1906 Reginald Fessenden constructed a high-frequency alternator (2 k W, 100 k Hz) and succeeded in transmitting the human voice much longer distance over the radio. 1948 Claude Shannon published Shannon-Hartley equation, which states that the capacity for error-free communications is limited and is both proportional to the bandwidth that the signal occupies and to the ratio of the received signal power to the received noise power.

Capacity = Bandwidth x Log June 1969 the Nordic telecommunications conference established the Nordic Mobile Telephone Group which was given the task to develop a new mobile telephone system that would be applied in all the Nordic countries.