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Radio Interference

Discussion in 'FM Transmitters' started by Flash, Nov 26, 2013.

  1. Flash

    Flash Not a morning person, except on December 25th.

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    Hi all, know its the busy time of the year but wondering if anyone can help. I am getting a high pitch buzzing sound like the one on this site http://www.pond5.com/sound-effect/8744262/electronic.html


    I am using this setup http://www.ebay.com.au/itm/111207067272?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649


    When I first set up the transmitter was next to the PC which produced the same sound and louder. I have moved the transmitter approx 5m into another room and turned off all electronics around it but the interference remains.


    I have googled and searched the web with no luck. Any suggestions?


    Thanks Simon
     
  2. David_AVD

    David_AVD Bite my shiny metal ass! Community Project Designer Generous Elf

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    Might be a noisy power supply for the transmitter.
     
  3. OP
    OP
    Flash

    Flash Not a morning person, except on December 25th.

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    Thanks David. It has a fan to cool the transmitter. Can this be safely disconnected? To eliminate another possibility.
     
  4. David_AVD

    David_AVD Bite my shiny metal ass! Community Project Designer Generous Elf

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    I guess you could try that for a short test.

    There has been a few threads on DIYC over the years on noisy power supplies and transmitters.
     
  5. OP
    OP
    Flash

    Flash Not a morning person, except on December 25th.

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    Cheers will go take a look. Thanks
     
  6. Habbosrus

    Habbosrus Back again

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    I can't access your link at the moment, but I bought a cheap transmitter from eBay and noticed some weird noises. After checking good old google, I bought a ground loop isolator from Jaycar for $9.90. My noise problem went away.
     
  7. OP
    OP
    Flash

    Flash Not a morning person, except on December 25th.

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    Thanks Habbosrus will pick one up tomorrow to test.
     
  8. OP
    OP
    Flash

    Flash Not a morning person, except on December 25th.

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    ground loop isolator works a treat.
     

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