The Brant Rock rotary-spark transmitter was rated at 100,000 watts ("Some Interesting Radio History", Radio World, September 8, 1923, p. 21), while the alternator transmitter had an estimated output of 12 watts (Aitken (1985) p. 74).
"Experiments and Results in Wireless Telephony" by John Grant, The American Telephone Journal. Part I: January 26, 1907, pp. 49–51; Part II: February 2, 1907, pp. 68–70, 79–80.
"Wireless Telephone Tests at Brant Rock and Plymouth, Mass." by Greenleaf W. Pickard, included as an appendix in Wireless Telephony in Theory and Practice by Ernst Ruhmer (translated from the German by James Erskine-Murray), 1908, pp. 205–214.
"Experiments and Results in Wireless Telephony" by John Grant, The American Telephone Journal. Part I: January 26, 1907, pp. 49–51; Part II: February 2, 1907, pp. 68–70, 79–80.
Fessenden, Reginald (1908), "Wireless Telephony", pp. 606–608.
«Fessenden: World's First Broadcaster?», 25-10-2006. Arxivat de l'original el 18 gener 2017. [Consulta: 17 gener 2017]. by James E. O'Neal, Radio World, October 25, 2006. (radioworld.com)
«Fessenden – The Next Chapter». Arxivat de l'original el 3 juliol 2015. [Consulta: 13 març 2018]. by James E. O'Neal, Radio World, December 23, 2008. (radioworld.com)
«Fessenden: World's First Broadcaster?», 25-10-2006. Arxivat de l'original el 18 gener 2017. [Consulta: 17 gener 2017]. by James E. O'Neal, Radio World, October 25, 2006. (radioworld.com)
«Fessenden – The Next Chapter». Arxivat de l'original el 3 juliol 2015. [Consulta: 13 març 2018]. by James E. O'Neal, Radio World, December 23, 2008. (radioworld.com)
