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Message-ID: <ADE7D1BACF204DDAA60B38DFDDAA4856@gnat>
From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
References: <50782029.2030005@psk31.plus.com> <507947F2.6080809@psk31.plus.com> <50795F14.1030207@iup.uni-heidelberg.de> <50797274.3050401@psk31.plus.com>
Date: Sat, 13 Oct 2012 19:24:43 +0100
MIME-Version: 1.0
Subject: Re: LF: EMI...
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Hi Eddie my commisserations on you interference, but can I refer you to the 
regulations and in particular the "conditions of your (TV) licence"

"You must not cause undue interference to any other radio television 
reception with your TV eqipment"

Note it does not say "broadcast". It is interesting you have interference at 
500kHz but not 472kHz. This almost suggests an older CRT system with 
15.625kHz line scan coils. Plasma interference is usualy from one of the 
PSUs and is radiated by the braid of the aerial. A TV braid breaker will 
often cure this.

If you are on good terms with your neighbour it might be worth drawing their 
attention to the licence conditions, and suggest they contact their 
supplier, as you may have to make a complaint. The supplier might be more 
"sensitive" than the neighbour, you may then suggest a "cure" to try. The 
RSGB did used to stock these filters which are normally used for VHF but are 
very effective for SMPSU radiation.

It  does work and these problems can be cured.

Alan
G3NYK


----- Original Message ----- 
From: "g3zjo" <g3zjo@psk31.plus.com>
To: <rsgb_lf_group@blacksheep.org>
Sent: Saturday, October 13, 2012 2:53 PM
Subject: Re: LF: EMI...


> On 13/10/2012 13:31, Stefan Schäfer wrote:
>>
>>
>> no chance in the UK to complain about the QRMing TV to an authority? Here 
>> in DL, we can monthly read in our club magazine how amateurs force their 
>> neighbours to switch off devices producing EMI to them...
>>
>> 73, Stefan
>>
> No Stefan, money talks.
> The big manufacturers have got their TV's, Computer PSU's and Power Line 
> Wifi devices passed despite them being above the permitted radiation 
> levels.
> Amateur Radio is not a protected service, so, unless the device is causing 
> interference to Broadcast or has a fault causing interference greater than 
> the manufactured level you are stuck and noise levels just rise all the 
> time.
>
> There are several Panasonic Plasma TV's round here, several thousand 
> pounds worth, if it was possible I would complain about them all and have 
> them all scrapped. I can't even QRM the things.:-(
>
> Of course there are exceptions, some PLT devices have been replaced for 
> wireless devices free by BT who should have known better and not installed 
> them in the first place. The RSGB even started collecting donations for a 
> private fighting fund to take the authorities on in a court of law re PLT.
>
> 73 Eddie
>