"Tim Shoppa" wrote in message
om...
snip

What's the most economical and reasonable way to deal with this? Will
RFC's on the power, ground, and sound lines be good enough? Those snap-
together ferrite cores from Radio Shack help a little, but not
nearly enough. In a few weeks my computer-controlled TenTec
RX-320D arrives and I want everything to be in ship-shape by then.

I own an RX-320. When I first hooked it up, I used a long wire antenna
which tended to be quite noisy. Was using an old (100mhz) computer with low
quality graphics. Built a folded dipole with (tv) coaxial input to radio.
Installed it in my roof. Everything became quiet.

I have since replaced my computer and monitor (high power, high quality
graphics, high refresh rates, etc.) and everything is still quiet. The
radio is less than 2 feet (as the mosquito flies) from the computer. I
still occasionally use the long wire to monitor the HF band edges and MW/LW
frequencies.

Information on the antenna can be found on Yahoo Rx-320 group
(groups.yahoo.com/rx320 message 2471, dated May 18, 2002.

(Tim Shoppa) wrote in message . com...
I've got a few PC's in nice metal cases. I can actually run most of my
receivers near the PC without too much problem, as long as the receiver is
powered by batteries. But the instant I hook my sound card to the receiver,
or I run the receiver off of AC power, all the SW bands are filled with
S9 hash generated by the computer and network equipment.

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.

(Tim Shoppa) wrote in message . com...
I've got a few PC's in nice metal cases. I can actually run most of my
receivers near the PC without too much problem, as long as the receiver is
powered by batteries. But the instant I hook my sound card to the receiver,
or I run the receiver off of AC power, all the SW bands are filled with
S9 hash generated by the computer and network equipment.

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.

Tim Shoppa wrote:

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.

Nice work. However it's not a good idea to have more than one ground
point for your domestic wiring. I suggest disconnecting the old copper
pipe ground wire near the circuit panel. You can leave the long wire in
place.


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Tim Shoppa wrote:

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.

Nice work. However it's not a good idea to have more than one ground
point for your domestic wiring. I suggest disconnecting the old copper
pipe ground wire near the circuit panel. You can leave the long wire in
place.


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http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

On Sun, 28 Sep 2003 0:02:29 -0500, starman wrote
(in message ):

Tim Shoppa wrote:

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.

Nice work. However it's not a good idea to have more than one ground
point for your domestic wiring. I suggest disconnecting the old copper
pipe ground wire near the circuit panel. You can leave the long wire in
place.


Uh, well, uh, but - you do realize that you're suggesting ungrounding the
entire house, don't you?

By code - if he did that - he should replace every 3-conductor outlet with
two-conductor outlets because the ground (green) has been removed from the
system (illegal as it can be, of course).

He did exactly as he should have.

He maintained the electrical ground ("earth") and he created an "antenna"
ground (chassis).



Gray Shockley
-----------------------
DX-392 DX-398
RX-320 DX-399
CCradio w/RS Loop
Torus Tuner (3-13 MHz)
Select-A-Tenna
-----------------------
Vicksburg, MS US

On Sun, 28 Sep 2003 0:02:29 -0500, starman wrote
(in message ):

Tim Shoppa wrote:

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.

Nice work. However it's not a good idea to have more than one ground
point for your domestic wiring. I suggest disconnecting the old copper
pipe ground wire near the circuit panel. You can leave the long wire in
place.


Uh, well, uh, but - you do realize that you're suggesting ungrounding the
entire house, don't you?

By code - if he did that - he should replace every 3-conductor outlet with
two-conductor outlets because the ground (green) has been removed from the
system (illegal as it can be, of course).

He did exactly as he should have.

He maintained the electrical ground ("earth") and he created an "antenna"
ground (chassis).



Gray Shockley
-----------------------
DX-392 DX-398
RX-320 DX-399
CCradio w/RS Loop
Torus Tuner (3-13 MHz)
Select-A-Tenna
-----------------------
Vicksburg, MS US

Here's a good link on grounding. The primary focus is lightning, but it's
still good:

http://www.polyphaser.com/ppc_PEN1016.asp


"Tim Shoppa" wrote in message
om...
(Tim Shoppa) wrote in message
. com...
I've got a few PC's in nice metal cases. I can actually run most of my
receivers near the PC without too much problem, as long as the receiver
is
powered by batteries. But the instant I hook my sound card to the
receiver,
or I run the receiver off of AC power, all the SW bands are filled with
S9 hash generated by the computer and network equipment.

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.

Here's a good link on grounding. The primary focus is lightning, but it's
still good:

http://www.polyphaser.com/ppc_PEN1016.asp


"Tim Shoppa" wrote in message
om...
(Tim Shoppa) wrote in message
. com...
I've got a few PC's in nice metal cases. I can actually run most of my
receivers near the PC without too much problem, as long as the receiver
is
powered by batteries. But the instant I hook my sound card to the
receiver,
or I run the receiver off of AC power, all the SW bands are filled with
S9 hash generated by the computer and network equipment.

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.

Gray Shockley wrote in message ...
He maintained the electrical ground ("earth") and he created an "antenna"
ground (chassis).

Yeah, that's what I did, and it worked very nicely. But it's also clear
that the ground at the AC entrance panel isn't doing so well itself. I've
got to find the relevant section of the NEC and figure out how I can
both comply with the code *and* put a ground there. I'm 100% sure that what
I did (5 foot copper pipes) for the radio ground isn't compliant for the
AC entrance ground.

Tim.