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History of the manufacturer  

Kudelski SA; Cheseaux-sur-Lausanne

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Name: Kudelski SA; Cheseaux-sur-Lausanne    (CH)  
Abbreviation: kudelski

Kudelski SA, 22-24 Route de Genève, CH-1033 Cheseaux-sur-Lausanne.
Also known as 'Nagra-Kudelski'.

1951: Birth of the first portable recorder, the Nagra I.
1957: Nagra III was created, but was released in 1958.
1965: First Nagra SN (Série Noire), miniature device.
1984: First Nagra VPR-5 video recorder.
1986: The company is listed on the stock market.
1989: Canal+ adopts Kudelski's access control system for pay television.
1991: André Kudelski succeeds Stefan Kudelski.
First million analog decoders sold. The company concentrates its activities on conditional access television.
1992: release of the company’s first digital audio recorder the NAGRA-D. 1997: the company spread his range of market, they went to the High-End audiophile, they started with the PL-P vacuum tube pre-amplifier. 1999: the Nagra D was redesigned and the DII version was born. 2002: Release of the Nagra V. 2008: release of the NAGRA VI.

Some models:
Country Year Name 1st Tube Notes
CH  82 F4-VLF   VLF-Synthesizer-Receiver. Längstwellenempfänger 100...200 kHz mit Digitalausgang für NAGRA... 
CH  75 Magnetkopf-Messmaschine   Kudelski Magnetkopf-Messmaschine zur Überprüfung von Magnetköpfen in der Fertigung. Die... 
CH  61–68 Nagra III (3) P, PH OC603  Die Nagra III P und PH (mit 2-Watt Endstufe) ist ein Reportage-Tonbandgerät entspr... 
CH  55 Nagra II-c DAF96  Thorens spring motor #144 with crank for wind-up. External microphone and earphones. ... 
CH  69 Nagra SNN/S   Body milled from a solid aluminum block 3 3/4 and 1 7/8 in/s (9.5 and 4.74 cm/s) tape spe... 
CH  76 Nagra E   Portable mono analog Recorder. Single speed 19cm/s NAB or CCIR. Frequency reponse 50 - 1... 
CH  80 Bobine type SN Tape reels for SN [late]   Diamètre : 65m/m - utilise de la bande étroite magnétique de 3,81m... 
CH  69 Bobine type SN Tape reels for SN [early]   Bobine flasques aluminium - diamètre 65mm - largeur de bande 3,81mm - existe en ... 
CH  70 SN reel winding unit (spooler) SRB   Bobineuse pour bandes de type SN - avance lente et rapide - double sens - boitier aluminiu... 
CH  71 Nagra 4.2   Kudelski Nagra 4.2; Professionelles Vollspur-Tonbandgerät, Netzgerät ATN-2, überarbeitete ... 
CH  80 Mains Power Supply ATF   Kudelski ATF, Mains Power Supply; For Nagrafax. 
CH  71 Nagra IV-S (4-S)   Kudelski Nagra IV-S; Professionelle tragbare Tonbandmaschine, der Konstruktion lagen ...