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HR 20 generating noise on AM band.

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by onchiman, Sep 28, 2010.

  1. onchiman

    onchiman New Member

    1
    0
    May 30, 2007
    I've got a problem with radio frequency noise coming from my HR-20. I have an outdoor long wire AM antenna. The HR-20 emits a steady 60 cycle noise on the AM band that's really pronounced. The HR-20 is grounded properly to the electrical ground via the dish. I tried unplugging the two converters, no change. The noise is there as long as the unit is plugged in. If I unplug the power cord, all is quiet. As soon as I plug it back in the radio noise starts again. Has anyone run into this issue and if so how did you solve it? I unplug the unit when I want to listen to the radio then plug it back in when I'm done. It's rather annoying when I want to listen to the local high school football games and wife wants to watch tv. Seems like it could be a power supply noise. Should i contact DTV and see if I can swap it for another?
     
  2. Davenlr

    Davenlr Geek til I die

    9,139
    28
    Sep 16, 2006
    Try plugging it into a UPS, or run a ground wire from the DVR case to the center screw on your outlet (assuming your outlet box is metal), if plastic, you will have to remove the cover plate and attach it directly to the green ground wire connection inside (after making sure the breaker is off).
     
  3. TomCat

    TomCat Broadcast Engineer

    4,153
    100
    Aug 31, 2002
    Be sure that both units are plugged into the same circuit (helps avoid ground loops) and that if the radio has a non-polarized plug, flip that around. Also, keep the antenna a far away from the DVR as possible, as it may not be a ground issue but direct pickup radiation. Also make sure the antenna does not run parallel with any power cords. You could try a ground lifter too.
     

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