I'm looking to replace the computer at my listening post, and would like to
find out if any certain brand of computer is known to have a low RF output.
I get a lot of noise on the SW bands from my existing PC (Micron) and leave
it off most of the time, which defeats the purpose.

What I'd like to do is replace with a low RF and acoustically quiet model,
and then get a flat-panel LCD screen and wireless keyboard and mouse. Any
problems with RF noise from wireless devices such as those?

Comments, experiences, etc. all welcomed.

Check with www.velocitymicro.com and tell them what you are looking
for in the way of a computer.They build high quality custom computers.I
Own one I bought about two and a half years ago,a Velocity Micro
ProMagix computer.It cost me $1,290.00 plus S&H,but I consider it money
well spent.
cuhulin

Wireless keyboard and mouse. www.gyration.com I bought my mini
wireless Gyration keyboard and mouse at an Office Depot store.I paid
$118.00 plus Mississippi Rip Off sales taxes.
cuhulin

On Mon, 25 Sep 2006 10:40:14 -0400, "DesignGuy"
wrote:

I'm looking to replace the computer at my listening post, and would like to
find out if any certain brand of computer is known to have a low RF output.
I get a lot of noise on the SW bands from my existing PC (Micron) and leave
it off most of the time, which defeats the purpose.

What I'd like to do is replace with a low RF and acoustically quiet model,
and then get a flat-panel LCD screen and wireless keyboard and mouse. Any
problems with RF noise from wireless devices such as those?

Comments, experiences, etc. all welcomed.


If you could afford, get a Tempest certified PC, failing that, try to
find one that meets FCC Class B standards. The A standard is pretty
noisy, and I have never seen a CRT that says it is class A, actually
meet the Class A standard (and I've spent a lot of time on an FCC
certified Test range). CRT's are the main culprit. The saw tooth
horizontal oscillator output is a fabulous interference generator.

"matt weber" wrote in message
...
On Mon, 25 Sep 2006 10:40:14 -0400, "DesignGuy"
wrote:

I'm looking to replace the computer at my listening post, and would like
to
find out if any certain brand of computer is known to have a low RF
output.
I get a lot of noise on the SW bands from my existing PC (Micron) and
leave
it off most of the time, which defeats the purpose.

What I'd like to do is replace with a low RF and acoustically quiet
model,
and then get a flat-panel LCD screen and wireless keyboard and mouse. Any
problems with RF noise from wireless devices such as those?

Comments, experiences, etc. all welcomed.


If you could afford, get a Tempest certified PC, failing that, try to
find one that meets FCC Class B standards. The A standard is pretty
noisy, and I have never seen a CRT that says it is class A, actually
meet the Class A standard (and I've spent a lot of time on an FCC
certified Test range). CRT's are the main culprit. The saw tooth
horizontal oscillator output is a fabulous interference generator.

Thanks for the tip on FCC class B standards....

I was planning on using a flat panel LCD screen for that reason, anything to
look for with LCD units?

Patent: Kill a Hard Disk Instantly via Internet.
www.cryptome.org/index.html

If you want to build your own mega server,look in the September 2006
Popular Science magazine.Never lose data files again,the article claims.
I never have any data in my computer worth saving.I have another way of
doing that.
cuhulin

DesignGuy wrote:
I'm looking to replace the computer at my listening post, and would like to
find out if any certain brand of computer is known to have a low RF output.
I get a lot of noise on the SW bands from my existing PC (Micron) and leave
it off most of the time, which defeats the purpose.

What I'd like to do is replace with a low RF and acoustically quiet model,
and then get a flat-panel LCD screen and wireless keyboard and mouse. Any
problems with RF noise from wireless devices such as those?

Comments, experiences, etc. all welcomed.





Avoid the wireless KB and mouse..
My last set splattered "digital" pulse noise all over the place. Ugh!
I could clearly hear the mouse splatter in the 10/11M bands everytime I
moved the mouse.

DesignGuy wrote:
I'm looking to replace the computer at my listening post, and would like to
find out if any certain brand of computer is known to have a low RF output.
I get a lot of noise on the SW bands from my existing PC (Micron) and leave
it off most of the time, which defeats the purpose.

What I'd like to do is replace with a low RF and acoustically quiet model,
and then get a flat-panel LCD screen and wireless keyboard and mouse. Any
problems with RF noise from wireless devices such as those?

Comments, experiences, etc. all welcomed.

Laptops are hard to beat for RFI issues.

You might want to take a portable SW like a DX398 and go to the local
stores
and check them out. I helped a friend find a low noise HP with my DX398
and
my RFI probe made from ~20 turns of #20 PVC insulated wire on a pill
bottle
form. I measured the inductance and found it to be ~20uH. I went to the
extra
trouble of putting a BNC and built several probes so I could have
different
probes for different RFI searches. I used ~3' of RG174 with a BNC on
one
end and a3.5MM on the other.

Be prepared for some odd looks and hesitation from the sales droids.
They must have thought we were AQ operatives or something.

A very usefull link for info on how to suppress most RFI can be found
at:
www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf
Ferrites will work near magic, but you have to use MANY more then
commonly
understood.

We, my wife and I, lucked out and we bought some NOS Gateway Solo
PIII 650MHz laptops with reasonably low RFI. Most of the PC RFI now
comes from the switch mode PS. Ferrite quitens it, but I built a couple

of very quite linear 120V to 18V DC supplies with very good filtering
to
keep the PC noise from reaching the AC mains. A bunch of ferrites on
the network and modem make it very acceptable.

Terry