Re: [IRCA] Modem Noise update

[Patrick Martin <mwdxer@xxxxxxxxx>]

The power supply is built in. Something like an isolation transformer? Unfortunately, the modem is owned by Charter Cable, so I cannot tear into the box. Thanks.

Patrick

Patrick Martin
Seaside OR
KGED QSL Manager

> Date: Sat, 19 Oct 2013 22:21:55 +0100
> From: hoddlesden@xxxxxxxxx
> To: irca@xxxxxxxxxxxxxxxx
> Subject: Re: [IRCA] Modem Noise update
> 
> My router caused all sorts of noise problems. Replacing the switched-mode
> power supply with a linear one cured it completely.
> 
> Paul
> Troon, Scotland
> 
> 
> 
> On 19 October 2013 04:39, Patrick Martin <mwdxer@xxxxxxxxx> wrote:
> 
> > I checked today and yes the modem noise is still there, just less with the
> > shield. I have hooked up a switch to just click it off when I want to DX. I
> > can forward my calls to the cel phone so I will still get them. I will have
> > to come up with something else. Maybe there is a dual Modem out there that
> > does not QRN. If not, I will just have to turn it off. Not convenient but
> > it works.
> > At least the cable creates no noise. I also have an idea, the QRN may be
> > getting into the power.
> >
> > Patrick
> >
> > Patrick Martin
> > Seaside OR
> > KGED QSL Manager
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