Power Line Signalling The Death Of H F Radio

What PLT sounds like and what to do about it

Category:

Education

Tags:

• PLT
• Power Line Signalling

[HurricaneSondra]

wow, what a lot of splattering, the band is FULL of that signal, it is splattering throughout the entire twenty meter band. illegal.

[G4PMY]

@HurricaneSondra , thanks for your interest, it is important we all resist this type of technology, or the hobby would be over. Here, our licensing authority has been really reluctant to take on the "big Boys" of manufacture, our radio society asked for subscriptions to a fighting fund, and even then it has taken a question using "the public information act" to get copy of test reports which state this kit does not comply with emc specs. 73s joe

[gchenley]

Hello: I live near Seattle, Washington and hear this noise from time to time on the 2 meter band. What is power line signaling? We have power meters that transmit our power usage on our homes. But I don't know if that is it. Thank you for an interesting video.

Regards

Gary KF7NLU

[G4PMY]

@gchenley Hi Gary

Power line signalling, simply put are transmitters and receivers which use your house wiring to send high speed data, typically video streamed form the internet to your TV set which is probably in a different room to your internet hub.

These devices use a fair chunk of the H.F. spectrum, and although some of them have notch filters to cover amateur segments of the band, the filters are not good enough to allow a neighbour listening to 1uV to enjoy his hobby.

[mikesndbs]

Hi there, yes this is a BT Vision supplied Comtrend power line adaptor!

If you have not already joined UKQRM please do so as we need to track these problems and we can help you speed your compliant with Ofcom.

Google UKQRM or check my YouTube channel for a e-mail

Cheers Mike UKQRM

[G4PMY]

@mikesndbs , Iterferance here was cured within 2 weeks. The secret was to give ofcom accurate measurements from the spectrum analyser. They visited the source and the owners (who knew nothing about rules etc), agreed BT could swap the system for cat-5 cable system. No more probs

[locoman1963]

did you eventually get rid of the horrible noise

[mikesndbs]

@G4PMY Glad its sorter for you! trouble is, if the source owners had said no, you would still be suffering it!

[LinuxManUK]

Nasty... every QTH i've been in since i got my G0 has had real bad QRN and TVI .. a so i gave up for 10 years. new house, new town, new station, new problems, streetlamp interference 15m up to 4m . not tried 2m yet. also instant TVI (Ofcom called again, said i was clean & carry on) a MFJ 1026 was tried (it phased out one source by 180 degrees) but there are multiple sources. new qth planned. gulp. try the phase cancelling devices if you get no luck mate.

[g7txu]

Good work and always nice to see an RA17 on youtube.

[Pyromaceno1]

Great video and well worth addressing this problem as i've got a intek h-520 plus handheld cb and I get the same thing in some parts but feel lucky my home is far away so my cb set up isn't effected but my friend who i speak to on 27MHz has this problem i hope BT of offcom have a solution maybe a filter of some kind???