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Die Geschichte des (Instrumentation-) Magnetbandes aus US Sicht von Ampex:

Es ist nicht immer leicht, amerikanische Geschichte zu verdauen. Immer ist eingerüttelt Maß an Lokalpatriotismus dabei. Man könnte das ja als die verklärte Wahrheit der alten Dabeigewesenen betrachten, so wie bei uns hier manche Zeitzeugengeschichte erst noch mal verifiziert werden muß.

Doch diese Dokumente stammen aber aus den 50er und 60er Jahren, also nichts mit Umnachtung oder Verklärug, das war offensichtlich so gewünscht oder erwünscht oder in Amerika ganz einfach normal.

Zum Verstehen kommt im nachfolgenden Absatz das Original (auch in englischer Sprache), so wie es 1960 publiziert wurde:

MILESTONES IN THE EVOLUTION OF
AMPEX MAGNETIC TAPE RECORDERS:

1900

FIRST MAGNETIC RECORDER patented in the United States. Having developed, exhibited, and patented a magnetic wire re­corder in Europe, Valdemar Poulsen was granted a United States patent on his Telegraphone. Output was very low with poor signal-to-noise ratio.

1906

FIRST DC BIAS patented in the United States. Poulsen and Pedersen had found that pre-magnetizing the wire in their Telegraphone recorder with a direct current would yield increased output but with a low signal-to-noise ratio.

1927

FIRST AC BIAS patented in the United States. During their work on magnetic recording techniques in a U.S. Navy laboratory Carlson and Carpenter had discovered that alternating current bias was in every way superior to direct current pre-magnetization.

1935

FIRST MAGNETIC TAPE RECORDER introduced in Europe. The first magnetic tape recorder was introduced using iron oxide coating impregnated in non-metallic plastic film or paper base. All previous models of magnetic recorders had used steel wire, steel ribbon, or plated metallic ribbon.

1948

UNITED STATES FIRST MAGNETIC TAPE RECORDER (AMPEX MODEL 200). Magnetic recorder production in the U.S. prior to this year had utilized steel wire or coated metal ribbon.

1950

INSTRUMENTATION RECORDERS INTRODUCED (AMPEX MODEL 300). Custom adaptations of professional audio tape recorders to instrumentation requirements.

1956

100% INSTRUMENTATION TAPE RECORDER (AMPEX MODEL FR-100). Conceived, designed and built expressly for instrumentation requirements. Modular signal electronics permitted simple plug-in modules to suit any instrumentation application.

1957

COMPUTER ORIENTED TAPE HANDLER (AMPEX MODEL FR-200). Provided a superior storage capacity and a more rapid transfer of data than punched cards or punched tape.

1957

VIDEOTAPE RECORDER (AMPEX MODEL VR-1000). Provided immediate record/reproduce of a video camera output or composite video signal.

1960

BROAD BAND INSTRUMENTATION TAPE RECORDER (AMPEX MODELS FR-700 and AR-300). Provides recording/reproducing of two channels of 10 cycle to h me information.

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