What is Broadcasting: Definition and 11 Discussions

Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum (radio waves), in a one-to-many model. Broadcasting began with AM radio, which came into popular use around 1920 with the spread of vacuum tube radio transmitters and receivers. Before this, all forms of electronic communication (early radio, telephone, and telegraph) were one-to-one, with the message intended for a single recipient. The term broadcasting evolved from its use as the agricultural method of sowing seeds in a field by casting them broadly about. It was later adopted for describing the widespread distribution of information by printed materials or by telegraph. Examples applying it to "one-to-many" radio transmissions of an individual station to multiple listeners appeared as early as 1898.Over the air broadcasting is usually associated with radio and television, though more recently, both radio and television transmissions have begun to be distributed by cable (cable television). The receiving parties may include the general public or a relatively small subset; the point is that anyone with the appropriate receiving technology and equipment (e.g., a radio or television set) can receive the signal. The field of broadcasting includes both government-managed services such as public radio, community radio and public television, and private commercial radio and commercial television. The U.S. Code of Federal Regulations, title 47, part 97 defines "broadcasting" as "transmissions intended for reception by the general public, either direct or relayed". Private or two-way telecommunications transmissions do not qualify under this definition. For example, amateur ("ham") and citizens band (CB) radio operators are not allowed to broadcast. As defined, "transmitting" and "broadcasting" are not the same.
Transmission of radio and television programs from a radio or television station to home receivers by radio waves is referred to as "over the air" (OTA) or terrestrial broadcasting and in most countries requires a broadcasting license. Transmissions using a wire or cable, like cable television (which also retransmits OTA stations with their consent), are also considered broadcasts but do not necessarily require a license (though in some countries, a license is required). In the 2000s, transmissions of television and radio programs via streaming digital technology have increasingly been referred to as broadcasting as well.

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  1. H

    What is the expected coverage range for my FM radio station in Lahore, Pakistan?

    Hello, I am from Lahore, Pakistan, I have obtained a FM transmission License in Lahore. and i am about to set my radio station here in few days. i have ordered the equipment which will reach here in 5-7 days more... here i am going to give you my broadcasting equipment details: now i am curious...
  2. N

    How to calculate the time delay based on a function of antenna angle?

    Hi everyone, I am a new student who is studying on collecting data from TV signal. I hope everyone can help me for ideas. I am having spectrum analyzer which can define a TV station around me, so I chose 4 stations WHUT-TV [584MHz 590MHz], WPXN-TV [590MHz 596MHz], WTTG [60 MHz 608MHz], and WNVC...
  3. N

    Why is radio spectrum allocation based on archaic models?

    The FCC's propagation models for the FM broadcast band seem grotesquely inaccurate in some places, where stations can be received that the models say are absolutely out of range. I'm not even talking about DX conditions like ducting or skip, I'm talking about baseline. When I lived in...
  4. B

    Question about digital broadcasting

    Is the DVB-T broadcasting standard exactly the same as the DVB-C broadcasting standard?
  5. J

    An AM station is broadcasting a radio wave whose frequency is 1400 kHz.

    Homework Statement An AM station is broadcasting a radio wave whose frequency is 1400 kHz. The value of the capacitance in Figure 24.5 is 8.4 X10 -11 F. The Value of the capacitance in Figure 24.4 is 8.4X10-11 F. What must be the value of the inductance in order that this station can be tuned...
  6. A

    Doppler Effect radio broadcasting

    Homework Statement Three radio-equipped plumbing vans are broadcasting on the same frequency f_0. Van 1 is moving north of van2 with a speed of v, van 2 is fixed, and van 3 is moving west of van 2 with a speed of v. What change in frequency (f-f_0) does van 3 hear from van 1? Homework...
  7. H

    Comparing AM and FM Broadcasting: Research Ideas

    Hey all I have to do a massive physics report on the topic "a comparison of Am against FM broadcasting." What are some topics i could research and compare. Cheers HSV
  8. C

    Neurology / Electromagnetic/ Frequency / Broadcasting question on Physics

    Neurology / Electromagnetic/ Frequency / Broadcasting question on "Physics" Neurology / Electromagnetic/ Frequency / Broadcasting question On "Physics" Say you have a brain running at 10-200 millionths of a volt at 1-13 Hz and you put a gold crown around it and hooking it up to a TV...
  9. J

    Can You Broadcast Internet Radio Locally with a USB FM Transmitter?

    Hi I usualy lissen to radios on internet, and i would like to be able to hear it everywhere in my house, rather than just when i am on my pc. Does this exist : a Frequency Modulator that i can plug by USB to my pc, and broadcast localy (like a 250 meters range) my internet radio or any...
  10. Math Is Hard

    U.S. switch to digital TV broadcasting

    https://www.dtv2009.gov/AboutProgram.aspx I ordered my $40 discount coupon for a converter box, since I am one of those who make do with rabbit ears.
  11. D

    Finding Capacitance & Inductive Reactance for RLC Circuit in FM Broadcasting

    1. A RLC circuit is used in a radio to tune into an FM broadcasting station at 99.7 Mhz. The resistance in the circuit is 12.0 ohm, and the inductance is 1.40 uH (micro Henry) what capacitance should be used? this question is tricky what i tried to do is used XC=1/wC where C is capacitance...