Editing Loading coil (section)

===Benefit to AT&T===
The invention was of enormous value to AT&T. Telephone cables could now be used to twice the distance previously possible, or alternatively, a cable of half the previous quality (and cost) could be used over the same distance. When considering whether to allow Campbell to go ahead with the demonstration, their engineers had estimated that they stood to save $700,000 in new installation costs in New York and New Jersey alone.<ref>Brittain, p. 45</ref> It has been estimated that AT&T saved $100 million in the first quarter of the 20th century.<ref>Brittain, p. 36</ref><ref>Shaw, T & Fondiller, W, "Developments and Applications of Loading for Telephone Circuits", ''Transactions of the American Institute of Electrical Engineers'', vol. 45, pp. 291-292, 1926.</ref> Heaviside, who began it all, came away with nothing. He was offered a token payment but would not accept, wanting the credit for his work. He remarked ironically that if his prior publication had been admitted it would "interfere ... with the flow of dollars in the proper direction ...".<ref>Brittain quoting Heaviside letter to Behrend, 1918.</ref>

{{anchor|Loaded submarine cable}}