• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

UK PLT Powerline Networking Interference

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Joined
Feb 24, 2001
Messages
65,126
Location
Virginia
#2
Take it to ground

As many know BPL was a hot topic with hams here in the states.
I've often wondered why someone experiencing interference couldn't just hang a low pass filter somewhere, such as across their incoming, or even in the house plugged into an indoor receptacle. Take the BPL and it's noise to ground.
 
Joined
Oct 6, 2007
Messages
154
Location
Lexington, NC
#3
The problem might not be mitigated by putting a low pass filter in the house.
At HF, many of the fundamental frquencies PLT/BPL uses are HF frequencies to start with.
Whole swaths of HF frequencies like 2MHz to 5MHz or sometimes the whole HF spectrum from 2MHz to 30MHz or even higher. Any filter that filters out the interfering BPL would also filter out the frquencies you are trying to listen to.
Any filter on the power outlet in the house would not work, because power lines are not insulated (shielded) like coax. Power lines are usually just uncoated copper or aluminum wire strung between poles.
 
Joined
Jul 20, 2016
Messages
3
Location
Ireland
#4
Because I live in the sticks, I don't get much PL or other interference.
Until last year, when I was plagued with a huge amount of broadband hash for virtually the whole spread of HF.
The culprits were a dodgy LED dimmer, a dodgy LED lamp and the really broad hash was coming from my LAN.
I binned the dimmer and LED, and put ferrite rings around every end of the LAN cables - about 9 turns each end.
The noise went from a steady S7 down to S1 and lower. There's still the odd splash and warble here and there, but I can live with it. Most recently, a cheapo PSU started playing up and I was able to quickly isolate that as the cause - while it lasted, it was fierce.
If I was still living in a town, I'd be driven to drink by neighbours' noisy appliances, I think.
 
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