On This Day in Telephone History April 17TH all this Telephone Stuff Happened

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On This Day in Telephone History April 17TH all this telephone stuff happened: 1957 Bell Laboratories announced development of magnetic tape machine capable of transmitting 1,000 words a minute -16 times faster than conventional teletypewriter systems. 1963 AT&T introduced the new cable ship long lines at Baltimore. the $19 million vessel, first of her type to be built for operation under the U.S. flag, was designed to string and repair cables across the world's ocean floors. 1968 AT&T unveiled an experimental model of a new telephone at its annual meeting in Boston. smaller, lighter and largely electronic, it weighs less than half as much as today's phones owing its lightness to integrated circuits.

1957 Bell Laboratories announced development of magnetic tape machine capable of transmitting 1,000 words a minute -16 times faster than conventional teletypewriter systems. 1963 AT&T introduced the new cable ship long lines at Baltimore. the $19 million vessel, first of her type to be built for operation under the U.S. flag, was designed to string … Read more

On This Day in Telephone History April 15TH 1956

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On This Day in Telephone History April 15TH 1956 San Diego, CA became first large city where all customers could dial their own calls to millions of other telephones in metropolitan areas from coast to coast.

On This Day in Telephone History April 15, 1956, San Diego, CA became first large city where all customers could dial their own calls to millions of other telephones in metropolitan areas from coast to coast.PRIOR TO DIRECT DISTANCE DIALING LONG DISTANCE TELEPHONE CALLS WERE PLACED THROUGH A LONG DISTANCE OPERATOR

On This Day in Telephone History April 14TH 1877

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On This Day in Telephone History April 14TH 1877 Emile Berliner filed a variable-pressure transmitter caveat. Berliner discovered that the minute atmospheric vibrations due to sound waves would cause a diaphragm to vibrate, which vibrations, by varying the pressure between the point of contact between metallic electrodes, in constant contact, produced variations of electrical resistance whereby speech may be transmitted.

On This Day in Telephone History April 14TH 1877 Emile Berliner filed a Variable-Pressure Transmitter Caveat. Berliner discovered that the minute atmospheric vibrations due to sound waves would cause a diaphragm to vibrate, which vibrations, by varying the pressure between the point of contact between metallic electrodes, in constant contact, produced variations of electrical resistance … Read more

On This Day in Telephone History April 12TH 1954

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On This Day in Telephone History April 12TH 1954, the first transistorized telephone repeater was put into operation at Americus, Georgia. The telephone repeater included transistor amplifiers made on printed circuit boards, which was also a first of this technique on Bell telephone lines. Amplifier elements such as transistors, condensers, and resistors are mounted on a plastic card. The connections between the cards are provided by lines of conducting material that are printed on the surface of the card. The original process for this was developed by the U. S. Bureau of Standards.

On This Day in Telephone History April 12, 1954, the First Transistorized Telephone Repeater was put into operation at Americus, Georgia. The telephone repeater included transistor amplifiers made on printed circuit boards, which was also a first of this technique on Bell telephone lines. Amplifier elements such as transistors, condensers, and resistors are mounted on … Read more