Federal Telegraph Company

Federal Telegraph Company grew out of Cyril Frank Elwell's wager on continuous-wave transmission. In Denmark, the engineer studied Valdemar Poulsen's arc, which could generate a steadier signal than the spark discharges then in common use, and obtained rights to develop it in the United States. In 1909 he founded the Poulsen Wireless Telephone and Telegraph Company in Palo Alto; the name Federal Telegraph Company took hold in 1911 amid a financial and commercial reorganization. At first this was neither a household-radio brand nor a factory founded to make tubes: it built arc transmitters and operated radiotelegraph links. Stanford's surroundings and the Palo Alto workshops nevertheless brought research, design, and production together in a way that would shape the region's later electronics industry.

The Poulsen arc generated continuous waves through a controlled discharge, whereas spark transmitters emitted trains of damped waves. Federal first built equipment rated at a few kilowatts and then more powerful systems, adapting electrodes, cooling and circuits for long distances. West Coast links and trials for the US Navy brought its equipment to stations such as Arlington and the Panama Canal network. Leonard Fuller recalled that rising power levels and naval orders outgrew the small workshop in central Palo Alto. An object from the company's early years, preserved in San José's historical collection, still shows the arc built in Palo Alto in 1909–1910. The very company refining this technology hosted Lee de Forest and his associates between 1911 and 1913: experiments with tube amplifiers and oscillators would help make the arc that launched the business obsolete.

The move to tubes was not instantaneous. Federal continued to supply professional and military communications while electronic tubes took over the tasks of generation, amplification and reception. In the early 1920s it hired engineer Frederick A. Kolster and also sought a place in the consumer market. The Kolster Radio line and the Federal-Brandes episode, involving the headphone and loudspeaker maker Brandes, formed part of that diversification. Kolster Radio Corporation later became a separate company and failed in 1930: its entire radio output cannot simply be assigned to the original Palo Alto factory. Federal passed through Mackay Radio and Telegraph in 1927 and subsequently entered the International Telephone and Telegraph (ITT) group. In that new setting, professional electronic tubes became more important than household radios.

The addresses document this transformation without treating distinct companies as a single plant. Poulsen Wireless and Federal's first premises were in Palo Alto, between Post Street and 913 Emerson Street. The address at 200 Mount Prospect Avenue in Newark belongs to the history of Kolster Radio Corporation in 1928–1930 and must not be confused with the parent company's offices. After the war, Federal Telephone and Radio Corporation appears at 591 Broad Street in Newark within the ITT system. A 1946 catalog describes water-cooled high-voltage transmitting and rectifier tubes, including the F-222-A, F-237-A and F-214-A: products far removed from Kolster receivers. The postwar name marks a later phase of the same industrial tradition, but its plants and tubes must not be projected back onto Elwell's laboratory. The Federal Radio Corporation of Buffalo, a similarly named business with a separate history, must also be kept distinct.

The history of Federal Telegraph brings together two technologies often presented as rivals. Its arc made long-distance services practical; research in the same workshops then pointed the way to tubes that would replace it. Naval equipment, commercial networks, professional tubes and a brief venture into consumer radios all belong to the company's story, but to different corporate and manufacturing phases. To understand a tube or a device attributed to Federal, one must consider its name, date and function together: the brand alone does not tie every object to Palo Alto's arc transmitter or to the later ITT factory in Newark.