[Elecraft] RFI resistant Monitor

[Jim Brown]

You'll find exactly these suggestions in the tutorial at the link I posted.

73, Jim K9YC

On Mon,4/11/2016 6:29 AM, Myron Schaffer wrote:
>
> One thing I have noticed over the years is that the near-field noise 
> is present with most any modern electronics. The switching frequency 
> is between 200-300kHz and can be easily sniffed with a pocket AM radio 
> (harmonics of that fundamental switching frequency are easily spotted 
> with an AM radio). When I bring my CCrane Pocket Radio in the near 
> field at the operating position, I can’t tune in the semi-local 600 
> KCOL out of Greely, CO. If I back up a few feet the noise level drops 
> considerably and the station is audible again. The CC Pocket Radio has 
> a fairly good front end with somewhat good selectivity but is still 
> overloaded with IBOC noise.
>
> I have battery chargers, an old Dell 1501 laptop, an external HD with 
> switcher, the list goes on. Common mode noise and strong near-field 
> noise is the bane of my ham radio existence in this RFI rich environment.
>