[Yaesu] RF quiet computers

[Dale McGraw]

When I put in my router with my external DSL modem I had all kinds of noise on multiple
frequencies. I then got to thinking and went to shielded ethernet cables.  All the
difference in the world,  Shopped around on the net and found some good and not so
expensive cables.  Since then I told several other people  and they have had great
results.

73, Dale K0JXI

Mike Brown wrote:

> I don't know about laptops, but when it comes to desktop computers, Antec
> power supplies and cases are RFI free. I have 2 17" crt's that have a lot of
> birdies, but the Lcd/flat panel took care of that. That cheap pc power
> supply I had would wipe out 40-160. It would be great to have all my
> antennas 100-200 ft from the shack. But, no likely to happen.
>
> Mike, K9MI
>
> ----- Original Message -----
> From: "Jerry Flanders" <jeflanders at comcast.net>
> To: "John Geiger" <n5ten at yahoo.com>; <dx-list at yahoogroups.com>;
> <cq-contest at contesting.com>; <ft-100 at yahoogroups.com>;
> <icom at mailman.qth.net>; <yaesu at mailman.qth.net>; <yaesu at contesting.com>
> Sent: Thursday, November 29, 2007 18:18
> Subject: Re: [Yaesu] RF quiet computers
>
> > Most computers and many monitors are noisy, John. Just use a well
> > shielded transmission line from your station for the first 50 feet or
> > so (with modern shielded rig, no unsealed antenna tuners in the
> > shack, no ladder-line in the shack, etc) and the noise will be _very_ low.
> >
> > Jerry W4UK
> >
> > At 12:36 PM 11/29/2007, John Geiger wrote:
> >>Recently, I discovered how RF noisy my fairly recent
> >>ebay purchased laptop is (an Acer Pentium III).  It
> >>replaced a Micron Pentium 120mhz computer which was
> >>very quiet on the radio, but also kind of slow, and I
> >>thought a laptop would be nice in the shack because it
> >>would mean less wires, etc.
> >>
> >>I find that it really raises the noise floor on 80,
> >>somewhat on 40, and on parts of 20 and 15.  It is
> >>probably bad on other bands as well, but I really
> >>haven't experimented with them yet.
> >>
> >>So I probably need to get a replacement, unless anyone
> >>knows how to kill this noise. What are some good, RF
> >>quiet computers to look at? I don't have alot of money
> >>to spend, but can come up with a little bit.  Speed
> >>probably won't be that important, as long as I can use
> >>it for some of the digital modes.  The Micron
> >>unfortunately died, or I would hook it back up.
> >>
> >>73s John AA5JG
> >>
> >>
> >>
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