Re: [IRCA] The Bad News

[Stan Horzepa <stanzepa@xxxxxxxxxxxxx>]

Thank you, Nick. I tried that last night and it made no difference.

However, I am making progress. I think it is a ground issue. Grounding 
the chassis of the FDM-S2 receiver noticeably reduced the noise.

Thanks again,

Stan, WA1LOU


On 6/13/2016 12:22 PM, Nick Hall-Patch wrote:
> I notice that you're using an external antenna Stan.    Have you tried 
> looping the lead-in from the antenna through the ferrite core?   (to 
> be simplistic) Often the problem is that the computer noise is 
> conducted out the antenna cable to the vicinity of the antenna.....and 
> the antenna picks up the noise.
>
> Good luck.
>
>
>
> Nick
>
>
> At 16:06 13-06-16, you wrote:
> > I bought an ELAD FDM-S2 SDR receiver and I am using it with my 
> > MacBook Pro under Windows 10 and Parallels.
> >
> > I am very happy with my new radio, but there is a problem: 
> > interference from the MacBook Pro battery charger/power supply. The 
> > interference is so strong that only the strongest AM stations are 
> > above the noise.
> >
> > The cable between the charger and the computer is the problem because 
> > the noise disappears completely when I disconnect the cable from the 
> > computer even though the charger is still powered.
> >
> > I installed ferrite cable clips on the cable, but that made no 
> > difference.
> >
> > I wrapped the cable 20 times around a toroid ferrite core, but that 
> > made no difference.
> >
> > One solution that works is to use the ELAD-MacBook Pro combo without 
> > the battery charger. This gives me a few hours operating without the 
> > interference, but sooner or later, the battery will need to be 
> > recharged.
> >
> > Anyone have any other solutions?
> >
> > 73,
> >
> > Stan, WA1LOU
> >
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