Kurti Posted April 25, 2018 Share Posted April 25, 2018 (edited) Hi all, Do you know where to buy a plc (power line communication) filter to remove those pesky ripple signals used to control our power networks? And while you're at it don't forget to sign the Change.org petition to increase the ABC online music stations bitrate: https://chn.ge/2tzpa0j Edited April 25, 2018 by Kurti Link to comment Share on other sites More sharing options...
andyr Posted April 25, 2018 Share Posted April 25, 2018 26 minutes ago, Kurti said: Hi all, Do you know where to buy a plc (power line communication) filter to remove those pesky signals used to control our power networks? Sorry, K - I don't (know where to buy one). Can you explain more about: what these signals are why you want to get rid of them, and where does a plc filter go, relative to your house wiring? Thanks, Andy Link to comment Share on other sites More sharing options...
Kurti Posted April 25, 2018 Author Share Posted April 25, 2018 (edited) Power line communication signals are used to control power network devices, for instance, they turn the relay for your off peak power on and off, typically used for hot water systems. They use frequencies between around 30 to 800 Hertz. Along the network infrastructure repeaters are used to amplify the signal. When you are close to one, the signals can interfere with your equipment, like you amp; you can hear them quite clearly when your amp's volume is quite high but your music has a quiet section or nothing is playing at all at the time when the signals come through. Filters are available, but only for professional installation in the switchboard. I've only seen inline filters for European, British and American power points. Edited April 25, 2018 by Kurti 1 Link to comment Share on other sites More sharing options...
andyr Posted April 25, 2018 Share Posted April 25, 2018 1 hour ago, Kurti said: Power line communication signals are used to control power network devices, for instance, they turn the relay for your off peak power on and off, typically used for hot water systems. They use frequencies between around 30 to 80 Hertz. Along the network infrastructure repeaters are used to amplify the signal. When you are close to one, the signals can interfere with your equipment, like you amp; you can hear them quite clearly when your amp's volume is quite high but your music has a quiet section or nothing is playing at all at the time when the signals come through. Filters are available, but only for professional installation in the switchboard. I've only seen inline filters for European, British and American power points. Thanks for the explanation, K. So if I don't have an off-peak electric HWS ... does my house power feed still receive these power line communication signals? Andy Link to comment Share on other sites More sharing options...
Kurti Posted April 25, 2018 Author Share Posted April 25, 2018 (edited) 48 minutes ago, andyr said: Thanks for the explanation, K. So if I don't have an off-peak electric HWS ... does my house power feed still receive these power line communication signals? Andy Yes, it does. The signals travel over the grid and are listened to by the receivers; if you don't have one, the signal is still present but doesn't do anything for you. The signals do more than just switching HWSs on and off, they are also used for internal network related actions like smart meter control and much more. This is why you can hear them at times when your off peak is not switched on or off. Edited April 25, 2018 by Kurti 1 Link to comment Share on other sites More sharing options...
Janjuggler Posted April 25, 2018 Share Posted April 25, 2018 Hi, http://www.omron.com.au/products/index.html JJ Link to comment Share on other sites More sharing options...
JSmith Posted April 25, 2018 Share Posted April 25, 2018 3 hours ago, Kurti said: Do you know where to buy a plc (power line communication) filter to remove those pesky signals used to control our power networks? This is often referred to as "ripple signals" or ripple injection load control and here is a few products that filter same (1st seems a more thorough product); https://www.tradezone.com.au/product/cabac-250-watt-ripple-signal-filter-1050hz-75149.html https://www.cablesonline.com.au/s-click-750hz-ripple-signal-filter This can affect all kinds of devices such as ceiling fans etc.; http://lighting-store.com.au/lightshop/martec_ripple_control.php If these signals are not affecting anything at all in your home, then I'd suggest there is no need at all to filter these signals... JSmith Link to comment Share on other sites More sharing options...
Kurti Posted April 25, 2018 Author Share Posted April 25, 2018 (edited) Thanks Mr Smith, this is what I mean. I'll Google it some more. The filter from your links is only 250 Watt, not enough for my amp. The signal at my house is so strong that I can hear it inside where my meter box is located on the outside. It is audible in all my grid connected audio gear. Edited April 25, 2018 by Kurti 1 Link to comment Share on other sites More sharing options...
Ittaku Posted April 26, 2018 Share Posted April 26, 2018 (edited) I use one of these as my power board which serves multiple functions, including the filtering you seek: http://www.booleanengineering.com/SEQUENCED POWER INTERFACE/index.html This made more of an audible difference to my hifi than any power cable I've ever tried too. Edited April 26, 2018 by Ittaku Link to comment Share on other sites More sharing options...
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