Radiocom 2000 is the French transportable mobile telephony network launched in 1986 which gradually replaced the analogue "public correspondence" network. It is classified as a first generation (1G) mobile.
Operating in the 400 MHz frequency band, the network uses digital technology for signalling and analogue modulation for voice. Frequencies are allocated dynamically according to requirements.
In response to growing demand from subscribers, several frequency bands have been used on the Radiocom 2000 network, in particular the 200 MHz and 160 MHz bands in the IDF, Lyon and Marseille regions and the 175 MHz band (specific subscription called "Radiocom 2000 VHF A/B") from 1990 in the north-eastern quarter of France. Also to meet the demand for more capacity, from 1990, mobiles became dual band 400/900 MHz, developed by Matra, Mobitel and Sagem as manufacturers. Other brands distributed these same products to their respective Original Equipment Manufacturer (OEM) brands, Alcatel and Nokia.
It is with Radiocom 2000 that the first notions of cellular telephony appeared with, shortly after its launch, the appearance of the handover called "High Density Network" RHD (ability to change cell dynamically) and the allocation of frequencies within a cell. The network covers almost the entire territory. The subscriptions offered could be regional: Ãle de France, Lyon Region, PACA, Province and National.
The sets are manufactured by Matra, Radiotel, Alcatel and then Sagem. Nickel-Cadmium batteries are rechargeable. The antenna is smaller than that of a terminal from the 1980s, but the terminal is still bulky and prohibitively expensive (device + subscription). It is deployed by France Telecom Mobiles.
In 1988, it had 60,000 subscribers and more than 90% of the devices were installed in vehicles. That same year, competition appeared with the creation of the SociÃ©tÃ© franÃ§aise de radiotÃ©lÃ©phones (SFR), combining Compagnie GÃ©nÃ©rale des Eaux (41%), CrÃ©dit Lyonnais (19%), Compagnie de Navigation Mixte (8.6%), TDF (7.5%), Banexi (4%), Bell South (4%) and Racal (4%), using the NMT-F (Nordic Mobile Telephone "FranÃ§ais") standard. It was abandoned in favour of the GSM standard on July 28, 2000.
translated from: https://fr.wikipedia.org/wiki/Radiocom_2000