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American engineer (born 1946)
Robert "Bob" Melancton Metcalfe (born April 7, 1946) is an American engineer and entrepreneur who contributed to the development of the internet in the
Robert_Metcalfe
Value of a communication network in terms of its connections
number of connected users of the system (n2). The law is named after Robert Metcalfe and was first proposed in 1980, albeit not in terms of users, but rather
Metcalfe's_law
Topics referred to by the same term
Robert Metcalfe or Metcalf may refer to: Robert Metcalfe (born 1946), American engineer and entrepreneur Robert Metcalfe (Hebraist), English priest and
Robert Metcalfe (disambiguation)
Robert_Metcalfe_(disambiguation)
Surname list
may refer to: Agnes Metcalfe, British headteacher and suffragist Andrew Metcalfe, former senior Australian public servant Ben Metcalfe, Canadian journalist
Metcalfe_(surname)
English priest and professor of Hebrew
Robert Metcalfe (1579–1652) was an English priest and Regius Professor of Hebrew at the University of Cambridge. Son of Alexander Metcalfe of Beverley
Robert_Metcalfe_(Hebraist)
American actor (born 1978)
Jesse Eden Metcalfe (born December 9, 1978) is an American actor. He is known for playing John Rowland on Desperate Housewives. Metcalfe has also had
Jesse_Metcalfe
Open standard family of wired computer networking protocols
message after waiting for a randomly selected period of time. In 1972, Robert Metcalfe and David Boggs adapted the ALOHAnet approach to transmission over
Ethernet
Former American maker of computer network products
company was co-founded in 1979 by Robert Metcalfe, Howard Charney and others. Bill Krause joined as President in 1981. Metcalfe explained the name 3Com was
3Com
Network that allows computers to share resources and communicate with each other
first international heterogeneous computer network. That same year, Robert Metcalfe wrote a formal memo at Xerox PARC describing Ethernet, a local area
Computer_network
American electrical engineer (1950–2022)
protocols, file servers, gateways, network interface cards and, along with Robert Metcalfe and others, co-invented Ethernet, the most popular family of technologies
David_Boggs
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
List of telephone country codes
List_of_telephone_country_codes
ISBN 978-1-57607-118-2. "Scenarios for using the ARPANET" (PDF). "Oral History of Robert Metcalfe" (PDF). "The Do-or-Die Moments That Determined the Fate of the Internet
International Conference on Computer Communications
International_Conference_on_Computer_Communications
Global system of connected computer networks
Notes and later RFCs repeated this use. The work of Louis Pouzin and Robert Metcalfe had important influences on the resulting TCP/IP design. National PTTs
Internet
Family of wireless network protocols
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Wi-Fi
Early packet switching network (1969–1990)
networking product), researchers at Xerox PARC, including ARPANET pioneers Robert Metcalfe and Yogen Dalal, shared the basic contours of their research with colleagues
ARPANET
Commander For Global Strike and Integration, U.S. Strategic Command Robert Metcalfe, Inventor of Ethernet John L. Petersen, President and Founder of The
NYU Tandon School of Engineering Lynford Lecture Series
NYU_Tandon_School_of_Engineering_Lynford_Lecture_Series
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telephone_numbers_in_India
Frequency bands used by Long Term Evolution networks
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
LTE_frequency_bands
Telephone prefix in the international telephone numbering plan
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telephone_country_code
Linked hypertext system on the Internet
original on 5 July 2015. Retrieved 6 July 2015. Berners-Lee, Tim; Cailliau, Robert (12 November 1990). "WorldWideWeb: Proposal for a HyperText Project". Archived
World_Wide_Web
Serbian-American engineer and inventor (1856–1943)
original on 23 March 2024. Retrieved 18 March 2013. Sobot, Robert (18 February 2012). Robert Sobot, Wireless Communication Electronics:Introduction to
Nikola_Tesla
Swiss multinational electronics and technology company
at Stanford University, under professors such as Ethernet inventor Robert Metcalfe. Returning to Europe, they began working on new ideas near Romanel-sur-Morges
Logitech
American telecommunications company
March 11, 2024. Krouse, Sarah; Volz, Dustin; Viswanatha, Aruna; McMillan, Robert (October 5, 2024). "U.S. Wiretap Systems Targeted in China-Linked Hack"
Lumen_Technologies
Device or point within a network capable of creating, receiving, or transmitting data
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Node_(networking)
Country calling code for multinational services in Europe
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
European Telephony Numbering Space
European_Telephony_Numbering_Space
full-duplex channels; between 1976 and 1977, Yogen Dalal, John Shoch and Robert Metcalfe among others, proposed separating TCP's routing and transmission control
History_of_the_Internet
Flags used for naval communication
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
International maritime signal flags
International_maritime_signal_flags
Sequence of digits assigned to a telephone subscription
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telephone_number
Early internetworking protocol
Internet. PUP was designed by David Boggs, John Shoch, Edward Taft, and Robert Metcalfe. In the 1980s Xerox used PUP as the base for the Xerox Network Systems
PARC_Universal_Packet
Rugged mobile phone
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
CAT_phones
American satellite TV provider
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Dish_Network
Cellular telephone network standard since 1991
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
GSM
Use of radio waves for communication
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Radio
Radio station in South Africa
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Radio_Sonder_Grense
Museum in Mountain View, California
Jean Bartik, Robert Metcalfe, Linus Torvalds 2009: Federico Faggin, Marcian Hoff, Stanley Mazor, Masatoshi Shima, Donald D. Chamberlin, Robert Everett 2011:
Computer_History_Museum
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
List of telecommunications companies
List_of_telecommunications_companies
American venture capital firm
191–193. ISBN 9780875849386. Retrieved September 27, 2016. "7.11 Robert Metcalfe and the Founding of 3Com". www.historyofcomputercommunications.info
New_Enterprise_Associates
Premium rate telephone prefix in North America
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Area_code_900
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
List of international call prefixes
List_of_international_call_prefixes
Electromagnetic radiation with wavelengths from 1 m to 1 mm
radiation (CMBR) discovered in 1964 by radio astronomers Arno Penzias and Robert Wilson. This faint background radiation, which fills the universe and is
Microwave
Continuous time-varying signal
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Analog_signal
Electromagnetic frequencies ranging from 3 kHz to 300 GHz
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Radio_frequency
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Lists_of_television_channels
Network for communications over distance
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telecommunications_network
Frames in the Wi-Fi standards (Ipv4_Ipv6 802.11)
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
802.11_frame_types
Identification code for countries
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Country_code
Means of connecting one location to another in order to transmit information between them
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Data_link
English computer scientist (born 1955)
manager, Mike Sendall, who called his proposals "vague, but exciting". Robert Cailliau had independently proposed a project to develop a hypertext system
Tim_Berners-Lee
Hardware used for telecommunication purposes
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telecommunications_equipment
Africa\Asia telephone calling codes
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telephone_numbers_in_Africa
American communications services provider
from the original on June 23, 2015. Retrieved February 9, 2012. Dr. J. Robert Beyster with Peter Economy (2007). The SAIC Solution: How We Built an $8
Iconectiv
Unshielded twisted pair communications cable
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Category_5_cable
American annual computer science prize
from the original on January 22, 2024. Retrieved March 4, 2024. "Robert Melancton Metcalfe - A.M. Turing Award Laureate". Association for Computing Machinery
Turing_Award
British telecommunications company
Orbis Drops Opposition". Bloomberg L.P. Retrieved 20 April 2026. Peston, Robert (2 September 2013). "Vodafone sells Verizon stake for $130bn". BBC News
Vodafone
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telephone_numbers_in_Canada
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
List of mobile network operators
List_of_mobile_network_operators
Inventor of the telephone (1847–1922)
Married David Fairchild. Two sons who died in infancy (Edward in 1881 and Robert in 1883). The Bell family home was in Cambridge, Massachusetts, until 1880
Alexander_Graham_Bell
Transfer of information or power that does not require the use of physical wires
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Wireless
Process of sending or propagating a signal
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Signal_transmission
American inventor of the telephone exchange (1839–1902)
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Almon_Brown_Strowger
American telecommunications company
March 23, 2016. Krouse, Sarah; Volz, Dustin; Viswanatha, Aruna; McMillan, Robert (October 5, 2024). "U.S. Wiretap Systems Targeted in China-Linked Hack"
Verizon
Wireless telecommunications device
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Pager
Television content transmitted via signals on coaxial or fibre-optic cable
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Cable_television
Text messaging service component
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
SMS
Australian soccer player (born 1999)
Connor Isaac Metcalfe (born 5 November 1999) is an Australian professional soccer player who plays as a central midfielder for 2. Bundesliga club FC St
Connor_Metcalfe
Real-time communication over the internet
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Online_chat
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telephone numbers in Australia
Telephone_numbers_in_Australia
English actress (born 1983)
Jennifer Joanne Metcalfe (born 4 September 1983) is a British actress from Bradford, England. She is known for her role as Mercedes McQueen in the Channel
Jennifer_Metcalfe
Forms of media that reach large audiences
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Mass_media
Mechanical apparatus used to send messages
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Semaphore
Hand-held portable two-way communications device
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Walkie-talkie
Cellular service provider
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Mobile_network_operator
Long-distance telegraph system in the United States
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Baltimore–Washington telegraph line
Baltimore–Washington_telegraph_line
Maximum rate of data transfer
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Bandwidth_(computing)
Japanese investment holding company
Juggernaut". Forbes. Retrieved 14 September 2020. Massoudi, Arash; Smith, Robert; Fontanella-Khan, James (12 September 2020). "SoftBank set to sell UK's
SoftBank_Group
Delaware-domiciled satellite communications company
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Loral_Space_&_Communications
Japanese telecommunications company
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
NTT_Docomo
Radiofrequency bands used by 3G Universal Mobile Telecommunications System networks
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
UMTS_frequency_bands
Telecommunications company in Azerbaijan
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Bakcell
American telephone service monopoly (1877–1984)
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Bell_System
Japanese telecommunication company
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Nippon Telegraph and Telephone
Nippon_Telegraph_and_Telephone
2001 banknote series
the foreground are two children with Canadian Armed Forces veteran Robert Metcalfe observing Remembrance Day. In the centre is a female Royal Canadian
Canadian_Journey
Asian telephone numbers
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Telephone_numbers_in_Asia
Computer network that connects devices across a large distance and area
conducted trials in 2017 for business use of 400-gigabit Ethernet. Researchers Robert Maher, Alex Alvarado, Domaniç Lavery, and Polina Bayvel of University College
Wide_area_network
American inventor and businessman (1847–1931)
Edison: Inventing the Century. Hyperion. ISBN 978-0-226-03571-0. Bradley, Robert l. Jr (2011). Edison to Enron. John Wiley & Sons. ISBN 978-1-118-19251-1
Thomas_Edison
International Telecommunication Union-approved frequency bands for GSM
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
GSM_frequency_bands
Frequency shift keying digital mode
Radio Digital Communications Mode FT8" (PDF). Retrieved 2024-11-11. Barron, Robert (2020-02-08). "PSK Reporter". KA5WSS. Archived from the original on 2022-10-06
FT8
Interconnecting different types of computer networks
design in the protocols that now power the internet. "8.7 Ethernet and Robert Metcalfe and Xerox PARC 1971-1975". Retrieved 2026-05-08. Moschovitis, Christos
Internetworking
Early method of transmitting photographs over telephone lines
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Wirephoto
Electromagnetic spectrum, 3 Hz – 3000 GHz
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Radio_spectrum
Top level network on the internet
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Tier_1_network
Digital representation of sampled analog signals
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Pulse-code_modulation
American multinational telecommunications and media conglomerate
operator. In February 1990, Ralph Roberts' son, Brian L. Roberts, succeeded his father as president of Comcast. Ralph Roberts established The Comcast Fund
Comcast
Award
Herwig Kogelnik and Allan Snyder 2002: Tim Berners-Lee 2003: Robert Metcalfe and Robert G. Gallager 2004: Sergey Brin and Lawrence Page 2005: Claude Berrou
Marconi_Prize
State-owned long-distance data transmission company
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
China Telecommunications Corporation
China_Telecommunications_Corporation
French multinational telecommunications corporation
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Orange_Group
System to transmit information by hand
Informational. This is an April Fools' Day Request for Comments. Freeman, Robert (2003). The Beatles: A Private View. NY: Barnes & Noble. p. 62. ISBN 978-1-59226-176-5
Flag_semaphore
French enterprise communication services company
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Alcatel-Lucent_Enterprise
Laboratory at US university
Peter Shor, and Madhu Sudan Grace Murray Hopper Award recipients Robert Metcalfe, Shafi Goldwasser, Guy L. Steele, Jr., Richard Stallman, and W. Daniel
MIT Computer Science and Artificial Intelligence Laboratory
MIT_Computer_Science_and_Artificial_Intelligence_Laboratory
Walkie-talkie radio system in the USA
Kapany Hedy Lamarr Roberto Landell Innocenzo Manzetti Guglielmo Marconi Robert Metcalfe Antonio Meucci Samuel Morse Jun-ichi Nishizawa Charles Grafton Page
Family_Radio_Service
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