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Post by MartinT on Jun 4, 2021 12:30:35 GMT
Printer will have nasty SMPS. Don't forget phone chargers, TV boxes, all manner of gadgets these days.
You could try a couple of large snap chokes around the incoming tails feeding the house. I have done this.
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The End?
Jun 4, 2021 13:19:13 GMT
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Post by John on Jun 4, 2021 13:19:13 GMT
At present I have removed all my snap chokes as do not seem to need them anymore I used to have them on every electrical cable with regards to my system
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The End?
Jun 4, 2021 15:59:31 GMT
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Post by julesd68 on Jun 4, 2021 15:59:31 GMT
Am following with interest to discover the culprit John, keep us posted ...
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Post by John on Jun 4, 2021 16:33:29 GMT
The biggest culprit I imagine is a cumulative effect of the SMPS and the noise created by the router but what having the biggest impact I am not sure yet Jules. It is like being a bit of a detective.
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The End?
Jun 4, 2021 16:58:05 GMT
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Post by julesd68 on Jun 4, 2021 16:58:05 GMT
But how does the factory noise fit into the equation? Router noise etc is a different matter isn't it?
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Post by John on Jun 4, 2021 18:16:01 GMT
I think the END is dealing with the Factory noise as imagine that is mostly coming through on the earth
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Post by BilliumB on Jun 6, 2021 3:05:04 GMT
Hi John
Do you know whether you are on a PME or TT earthing setup?
Cheers. Bill
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Post by John on Jun 6, 2021 4:37:02 GMT
Hi Bill I am sorry I do not know Bill
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Post by BilliumB on Jun 6, 2021 8:41:13 GMT
If it’s PME there’s probably a notice at your electric meter. If not PME you will probably have an earth wire (green/yellow - if modern, just bare wire if old) to an earth spike in the ground outside.
It you are NOT on a PME setup you could probably improve the earthing of your property with additional earth spikes. Doing this can be dangerous if you’re on a PME system so you should get an electrician’s advice before going down this route.
Cheers Bill
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Post by John on Jun 6, 2021 11:31:12 GMT
Cheers Bill
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Post by stellabagpuss on Jun 9, 2021 22:12:50 GMT
Hi John, l run a similar setup to yourself, l found running the Temple Audio off 24v lithium e bike batteries was a big jump in performance, compared to the standard supplied psu, and they are totally off grid, so no noise. One of my other hobbies is Long Distance Radio listening, l can tell you from experience, that most homes are full of RFI interference. I actually had to give my Radio hobby up,as due TV ,LED Xbox etc,it became impossible to listen to any weak to fair stations,the noise just blanks everything out.l was amazed that once l walked outside my garden and got about 10ft away with portable radio,l could start hearing weak stations on MW again. This lead me me understand how bad houses really are for noise. l have since built a cabin at the end of my garden, that has my hi fi and Radio equipment. Using portable radio tuned to MW is a great tool on finding noisy psu, swapping my routers psu for a low noise linear, made a big difference. The problem is the cheap psu supplied with everything these days lt can be a constant struggle, l now run most of Radio equipment off 12v battery, to get the lowest back ground nouse. Not sure if anything l have mentioned, will help? Or try the portable MW,Radio test, you be shocked at how much interference there is in a house.
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Post by John on Jun 10, 2021 4:42:12 GMT
Hi Damien I like your idea of 24v battery and having it off the grid. Any links to what you use and what do use to charge I agree so much noise. I have to get the router moved into a different circuit soon as think this is the major issue I got all the parts and should be able to do next week John
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The End?
Jun 10, 2021 14:11:12 GMT
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Post by julesd68 on Jun 10, 2021 14:11:12 GMT
That must be worth a try with the Temples. I'm a big fan of battery power.
I think I will investigate a linear PSU for the router, maybe an adjustable voltage one that could be used elsewhere if necessary.
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Post by stellabagpuss on Jun 12, 2021 7:31:09 GMT
You will find lots of random Radio Ham web pages or You Tube Video in reference to what is called in the Radio World as "RFI". There are so many poorly designed Household Appliances these days, that your issue could be simply in your house. Switch Mode PSU as you mentioned, cheap chargers etc are well known about, it's down to the fact thats there's no filtering in them, and once connected, act like a antenna. Other items, LED lighting is common, again in bathrooms and kitchens, you will find there powered by cheap Switch Mode PSU LED roadside lights Household PLC Mains internet extenders, they use your mains to extened your internet, generally when WI-FI won't work, of course great for internet, but terible for RFI,they turn your house into a massive RFI antenna. There was a big legal campiagn to ban these from Radio Hams, as one house can radiate RFI up to a 1/4 mile away! Then your TV's Plasma,LCD etc and Playstations and XBoxes. Of course changing every PSU in the house is an impossible task and costly, especially if it's your 65" LCD TV monitor, you simply have to live with it. Going around and flick the switches. If only life was that simple, as your neighbours could be a factor as well. Your on the right path John, turn the switches off, use a portable radio on MW and tune to a weak, but listenable local stations and use it to sniff out RFI. I would swap out your routers PSU for a lineaur PSU. Have a look on ebay for PSU, once you know the voltage and amps, your find them in older Household Appliances, just a case soldering the correct input plug on and checking polarity. I purchased a new chineese one from ebay,a few years ago, works a treat so there are lot's of options, even car boot sales,and charity stores etc they needn't cost you a fortune, just a bit of patience. This is a great link for RFI. Of course, it's aimed at Radio Listeners and Hams, but you may be using one of these items, don't get too depressed with the lists, and use it as a possible guide. It's amazing how much we all contribute to RFI, but it's not in the public radar, and if it is it's probably 1% ! Anyway hope this is educational for you. Damien www.arrl.org/sounds-of-rfi
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Post by MartinT on Jun 12, 2021 9:12:06 GMT
That's a great resource, thanks.
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Post by John on Jun 18, 2021 12:45:14 GMT
I finally been able to move the router downstairs with a RJ11 extension cable. Well that is a nice improvement. Seems my guess was right. Years of thinking that the Factory close by was causing the problem only to discover that I was chasing rabbits down the wrong hole. A big thanks to Tony at Coherent for helping with a logical test method I need to test a few more times to be sure this has solved the issue as I been here to many times to be sure I have solved this. Listening impressions extra depth, realim and clarity. Perhaps a better way to describe this is accurate or at least what I imagine that to be.
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The End?
Jun 18, 2021 13:08:42 GMT
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Post by julesd68 on Jun 18, 2021 13:08:42 GMT
So the solution was simply getting the router away from noisy SMPS based equipment?
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The End?
Jun 18, 2021 13:36:37 GMT
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Post by John on Jun 18, 2021 13:36:37 GMT
It is probably a bit more complex than that but to the present issue seems so.
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The End?
Jun 18, 2021 13:40:10 GMT
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Post by John on Jun 18, 2021 13:40:10 GMT
I was running the router on a very good power supply Perhaps some of the issue caused by the WiFi and some by internal noise of the router
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The End?
Jun 18, 2021 17:37:16 GMT
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John likes this
Post by stellabagpuss on Jun 18, 2021 17:37:16 GMT
Thats great news John, l hope it's resolved your issues
Damien
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