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Thread: power supplies with minimal radio interferance?

  1. #81
    Variable Bitrate csfile's Avatar
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    I just installed ferrite rings and now my reception is crystal clear. I didn't have horrible reception/interference, but the rings have seemed to clear it up.

  2. #82
    Constant Bitrate utd09bry's Avatar
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    Quote Originally Posted by csfile View Post
    I just installed ferrite rings and now my reception is crystal clear. I didn't have horrible reception/interference, but the rings have seemed to clear it up.
    Where did you install your ferrites?

  3. #83
    Variable Bitrate csfile's Avatar
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    Quote Originally Posted by utd09bry View Post
    Where did you install your ferrites?
    I put it on the antenna cable (input side to receiver), on RCA->3.5mm cable (3.5mm side by PC), and threw a couple of extras on the RCA inputs to my amp.

    also, to clarify...I mentioned rings in my last post. I actually used ferrite chokes.

  4. #84
    Constant Bitrate utd09bry's Avatar
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    Interesting... generally you would want to place the ferrite at the source of the interference (ie just outside your pc case on wires leaving), but in practice I've seen all sorts of combinations work, and not-work.

  5. #85
    Variable Bitrate csfile's Avatar
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    Yeah...I kinda just placed them without thinking just to see if there was any improvement. I was surprised in how much it did improve. I guess I don't have to tinker with it any more. But the chokes are easy enough to move around so I'll probably experiment with the placement.

  6. #86
    Constant Bitrate mstaedt's Avatar
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    I'm finding it more difficult to stay motivated on this.

    For some reason, I can run my truck computer and a Visteon right next to each other in my mini-van and I get perfect reception. So now I'm trying to figure out what's different about the mini-van.

    ???!!!!!!
    --------------------------------
    Project completed! (almost)

    My Truck as featured in Custom Classic Trucks magazine.

  7. #87
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    Okay. I had a thought. A very simple thought, but I know it would at least solve one of my problems.

    With my car on and playing the radio or the car2PC input, I don't hear alternator whine. But lets say I hibernate my computer. While it is going into hibernation I get some serious alternator whine. I don't know why I hear it only when the computer is going into hibernation (might be on bootup too, but I don't think so). I want to get a ground loop isolator. I am hoping that it has something to do with the crappy radio reception. Anyone else have anything similar happening? Maybe the two things go together?

  8. #88
    Constant Bitrate utd09bry's Avatar
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    Quote Originally Posted by mazda8 View Post
    Okay. I had a thought. A very simple thought, but I know it would at least solve one of my problems.

    With my car on and playing the radio or the car2PC input, I don't hear alternator whine. But lets say I hibernate my computer. While it is going into hibernation I get some serious alternator whine. I don't know why I hear it only when the computer is going into hibernation (might be on bootup too, but I don't think so). I want to get a ground loop isolator. I am hoping that it has something to do with the crappy radio reception. Anyone else have anything similar happening? Maybe the two things go together?
    If you're getting noise when your PC is going into hibernation, then your noise source could be the hard drive.

    Is your PC tucked away and sealed in a metal box?

  9. #89
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    my m2 atx is making nosie into my sound card...(one of the jack is cliping....)when i try it with another psu there is no problem...so i would like to know if is there a way to hack the m2-atx(by changing some piece) to get it noise free

  10. #90
    Constant Bitrate mstaedt's Avatar
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    Eureka!!

    I found the silver bullet!! (my silver bullet, anyway).

    The good news is I ELIMINATED the interference. I don't mean reduced to an acceptable level, I mean it's GONE.

    The bad news is that my truck PC has been reduced to practically nothing!

    As mentioned somewhere previously, my truck PC (WITH the M2-ATX still intact) and the Visteon will live harmoniously in my mini-van. The last things left in the truck that my van didn't include were the amps and the crossover/equalizer that I'm using as my volume control. Plus all of the RCA cables running back and forth over the length of the cab to connect it all. So I disconnected all of the RCA cables, turned off the amps, and pulled the fuse to the crossover/eq. I had to hook a pair of headphones directly to the Visteon to listen to it. A quick couple of test drives listening to both of my favorite stations through the worst reception areas in my neighborhood and the radio did not cut out once!


    SO, now all I have to do is figure out how to get the system all put back together and functioning again. I'm fairly certain now that I have some serious ground loop issues given that I have a $#i+-load of RCA cables connecting my Visteon to my PC to my crossover/eq to a pair of amplifiers. Not to mention all the power cabling to all of that stuff.

    I'll let y'all know how it goes.

    --------------------------------
    Project completed! (almost)

    My Truck as featured in Custom Classic Trucks magazine.

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