[Top] [All Lists]

Re: [RFI] A source of RFI

To: "Roger (K8RI)" <k8ri@xxxxxxxxxxxxxxxxx>
Subject: Re: [RFI] A source of RFI
From: "Kenneth G. Gordon" <kgordon2006@xxxxxxxxxxxx>
Date: Tue, 30 May 2017 09:16:45 -0700
List-post: <mailto:rfi@contesting.com>
On 30 May 2017 at 6:20, Roger (K8RI) wrote:

> I know this sounds trite, but get a good computer.

I've got one. I build all my own computers (6 in the house so far) and always 
use top-notch 

>  I'm running two 
> monsters in full size, steel tower cases within 3 feet of the rigs, USB 
> cables and standard serial cables (com1 and com 2). I have no 
> interference and no chokes on any of the lines.  The 75/40 sloping 
> dipole is about 60 feet from the computers.  O
> Desktop computers (PCs) typically use plastic cabinets and inexpensive 
> power supplies. The same goes for network interface cards.


> It's often not just the cables that radiate, but the computer itself 
> with the plastic cabinet makes for no attenuation to signals from inside 
> the computer.

Yes. Mine are all steel.

> Jim Brown (K9YC) has an excellent page on grounding and choking, but 
> with plastic cases...who knows.


> Antennas are 60 feet of more distant, but a fire in the RX coax 
> connector doesn't hear the computers either.

My antenna (the only one I presently have) is at least 50 feet from my 

It appears that all my present RFI is coming from the monitor. I'll get that 
fixed later this 


This email has been checked for viruses by Avast antivirus software.

RFI mailing list

<Prev in Thread] Current Thread [Next in Thread>