The Stratford Evening Post. WITH WHICH IS INCORPORATED THE EGMONT SETTLER. SATURDAY, MARCH 29, 1913. LONG DISTANCE TELEPHONY.

Stratford Evening Post, Volume XXXV, Issue 69, 29 March 1913, Page 4

The Stratford Evening Post. WITH WHICH IS INCORPORATED THE EGMONT SETTLER. SATURDAY, MARCH 29, 1913. LONG DISTANCE TELEPHONY.

The announcement has been made in New York that next year that city will 1)0 aide to call up and talk to San Francisco by telephone, the distance between the two cities being 3360 miles. Two fresh discoveries, it is stated, made it possible to speak over a circuit so long. The explanation given is that Professor Michael Pupin, of Columbia College,'in June, 1900, hit upon a device which he called a “loader,” a coil distributed along the telephone at regular intervals, through which the current in passing gains force. The possibilities of the “loader” were not comprehended at first, but time and ingenuity worked it . out, and then came the discovery of the “phantom wire” or phantom circuit. It appeared that by taking two copper wires and crossing them at regular intervals, all the while running them through the loader, a third circuit was mysteriously created—that is, not only could two telephone receivers be used on the real wires, but a third could bo added, making three telephones working simultaneously and separately on two strands of copper. The New York and Denver circuit has a length of a little more than 2000 miles, that to Chicago is 950 miles long, and tho length of the St. Louis line is 1050 miles. Until tho “loaded phantoms” were discovered or developed tho lines to the two cities named represented the limits of telephony. The cost of talking from New York to San Francisco is estimated at 70s a minute.