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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Be sure to register now for the Joint DX Convention
Kansas City, September 9 to 11.  Hotel space is filling up.
Registration info:
http://www.nrcdxas.org


Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers

For more information: http://www.ircaonline.org

To Post a message: irca@xxxxxxxxxxxxxxxx