Message-ID: <009601c49405$e78029a0$08540150@captbrian>
From: "captbrian" <captbrian@ukonline.co.uk>
To: rsgb_lf_group@blacksheep.org
References: <EPECIMHCBLPKNKKFIKKOOEAHDNAA.f6agr@wanadoo.fr> <001001c49402$4eb5cfc0$edce28c3@erica>
Date: Mon, 6 Sep 2004 12:37:34 +0100
MIME-Version: 1.0
Subject: LF: Re: Re: Save energy, but generate QRM ...
Content-Type: text/plain; charset=iso-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org

The fact is that some do and some do not cause HF interference. I have not
checked every one at LF. . I have several that are satisfactory and two that
are not. The problem is not with one's own house, where baddies can be
switched off,but with 'them' next door.

G3GVB
----- Original Message -----
From: g3ldo <g3ldo@ukonline.co.uk>
To: <rsgb_lf_group@blacksheep.org>
Sent: Monday, September 06, 2004 12:11 PM
Subject: LF: Re: Save energy, but generate QRM ...


> Jean-Louis F6AGR said:
>
> > Let me introduce to you a new candidate to the "Ugliest 137 kHz QRM
> > generator Challenge".
> > I'm talking about the Philips SL.E Pro 16W Warm White light bulb.
> > This light bulb (quite expensive) saves energy and uses only 16 watts AC
> to
> > produce the same light as a 100 watts conventional light bulb, but
> generates
> > an horrible noise (multiple discrete frequency lines) all over the 137
kHz
> > band.
>
> About three years ago I tentitively tried out one of these energy saving
> bulbs and didn't find any interference throughout the LF/HF spectrum and
> have, over a period introduced more into the house. These bulbs do save a
> lot of energy, which is a consideration with cost of energy in this
country.
> So perhaps we could draw up a list of low energy bulbs that don't cause
> interference.
>
> Most of the bulbs I have are cheap ones from Woolworths and are described
as
> BIAX V257 made by GE Lighting.
>
> As regards electronic 'transformers' could the fix be just to replace it
> with a conventional transformer?
>
> Peter, G3LDO
>
>
>