TELE 3010 Exam 1

Telecommunications 3010 with Juwayeyi at University of Georgia

About this deck

By: Tim Sheehan
Created: 2011-02-03
Size: 34 flashcards
Views: 66

About StudyBlue

STUDYBLUE makes things that make you better at school. Things like online flashcards with photos and audio. Things like personalized quizzes and friendly reminders about when (and what) to study next. Think of it as a digital backpack™: access to all of your study materials online and on your phone. STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.

“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy

Sign up (free) to study this.

James Maxwell and Heinrich Hertz

demonstrated the existence of electromagnetic radiation

Marconi

experiments with radio transmitters/receivers

formed company for wireless telegraphy

Fessenden

built alternator, transmitted voice, christmas eve broadcast

De Forest

invented the audion-amplified weak radio signals, continuous wave

audion

makes modern electronics possible

Navy during WWI

took control of all radio stations, installed radio equipment on all ships, rapid tech advancement due to Navy usage during war, suggested GE buy Marconi

American Marconi

American branch of British Marconi, point-to-point radio transmissions, looked down upon because of connections to foreign power, sold to Radio Corporation of America (RCA) after WWI

RCA

Radio Corporation of America, formed post war, parent company was General Electric, divided tech/market with Westinghouse and ATT

Wireless Ship Act of 1910

stated that certain passenger vessels must carry wireless sets-caused many amateur operators to interfere with navy operations

Broadcasting Act of 1927

individuals could not own frequencies, licensees operate in public interest, government censorship was forbidden, created temporary 5 member FRC to solve interference problems

Federal Communications Act of 1934

established FCC

early radio company agreements?

GE and Westinghouse manufacture equipment, RCA sells it, ATT builds transmitters

what lead to the growth of radio?

expanded technology thanks to WWI, thousands of people trained during WWI by Navy, business interests saw potential money

AM radio

amplitude modulation, frequency of early radio days,

FM radio

frequency modulation, invented in 1933, sounds better and has less static than AM

Early broadcasting

cheaper to produce program and send it to multiple stations, rural listeners wanted better programing, advertisers wanted to increase range

kinds of early radio programs

big bands, amos n andy, sitcoms, crime shows, news

how did broadcast television start?

world's fair 1939, iconoscope and image disector-early predecessors, NBC,

sixth report and order

1952-assigned table of channels, opened up Ultra High Frequency band, set standards for color TV, educational channels set aside

how did cable TV start?

rural towns ran cable and shared antenna system to get better service, Community Antenna TV-CATTV

Cable tv vs government

FCC avoided regulating cable until 1972-local communities, states, and FCC regulate cable, new systems have minimum 20 channels, carriage of all local stations, pay cable must be approved

TVRO

satellite television receive only earth stations, people who couldn't get cable, huge satellite dishes

MMDS

multichannel, multipoint distribution system, uses microwave technology, use downconverter to convert

DBS

nationwaide distribution of TV programming from satellites to compact receivers

Video Tape Recorder

invented in 1956, didnt become available to home viewers until 1976

beginnings of internet

SAGE provieded US with advance warnings of missile attacks, US funds ARPANET to build first interactive computer network, Usenext extended to universities

What is internet?

global interconnection of computer networks

World Wide Web

graphical interface of the internet, idea developed by tim brenners lee

fascimile

sounds from a speaker and pictures on tv screen are REPRESENTATIONS of their original form

transduction

process of changing one form of energy to another

binary

language of computers, 0s-on and 1s-off

steps of signal processing

signal generation

amplification and processing

transmission

reception

storage and retrieval

types of microphones?

dynamic, condenser, velocity

satellite communication

programmer, to satellite, to DBS provider, to satellite, to dish, to receiver

About this deck

By: Tim Sheehan
Created: 2011-02-03
Size: 34 flashcards
Views: 66

About StudyBlue

“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy