Use 433MHz transmitter for video rca?

  1. Apr 27, 2014 #1
    Hi I want to transmitt a video rca signal with dome of the 433mhz transmitter and receiver modules you can get on ebay for cheap.

    I have used them alot and have accomplished transmitting data through picaxe microcontrollers successfully.

    But could I use it to transmitt a video rca signal so that the output can be connected to a television?

    I think I read that rca is at only a few khz and I have been transmitting data at 4mhz so there should be no problem with clarity.
    Has anyone done this?
    Will it work?
     
  2. jcsd
  3. Apr 28, 2014 #2

    davenn

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    the video will most likely still be pretty crappy
    a standard video signal is ~ 7MHz bandwidth

    Also 433MHz isn't really for that sort of thing ...that ISM band is mainly for narrow bandwidth/low data rate applications at a low power level

    cheers
    Dave
     
  4. Apr 28, 2014 #3
    do you know any way to accomplish this without buying an expensive rca transmitter?
     
  5. Apr 28, 2014 #4

    dlgoff

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    What distance?
     
  6. Apr 28, 2014 #5

    davenn

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    yeah that's a good Q

    most of those433 MHz modules are only ~ 10 mW
    and 10mW spread across 7MHz is not going to go far


    You mite want to look at 2.4 GHz modules
    There's already a mass of 2.4GHz A/V sender and receiver units on the market
    .... no point in making it hard for yourself

    a lot of electronics retailers sell complete units ready to use

    ohhh and by the way, Tesladude, get used to using the correct notations, it saves confusion
    MHz NOT mhz :smile:


    Dave
     
  7. Apr 28, 2014 #6

    berkeman

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    Yeah, a 433 milliHertz channel is going to be mighty slooooooooowwwwww.... :biggrin:

    (I fixed the thread title to MHz now.)
     
  8. Apr 28, 2014 #7

    davenn

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    cheers
    Mike :smile:

    D
     
  9. Apr 29, 2014 #8
    Yes!
    Mhz, not mhz.
    I hate it when others make that mistake so I probably should not be making it!



    I use a 433"M"hz transmitter that is 1.5 watts and is supposed to reach about 3Km.
    I would like to transmit the video signal as close to 3Km as I can get.
     
  10. Apr 29, 2014 #9

    meBigGuy

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    "I think I read that rca is at only a few khz"

    Not sure where you got that from.

    How do you plan to modulate the signal? Wide bandwidth composite video onto the 433MHz carrier? No audio, I assume.
     
  11. Apr 30, 2014 #10

    davenn

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    NO not Mhz

    its MHz Hz = Hertz after Mr Hertz

    Dave
     
  12. Apr 30, 2014 #11

    davenn

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    not sure what you are referring to ?

    rca should be RCA as in the plug/socket, not ideal but commonly used for composite video signals

    Dave
     
  13. Apr 30, 2014 #12

    meBigGuy

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    I was refrerring to the OP's statement in post 1 "I think I read that rca is at only a few khz"
     
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