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.

Leave the existing AC panel ground alone! Make sure that you tie your new
ground to the existing power panel ground. Failure to do that can result in
unnecessary damage in the event of a nearby lightning strike because the two
separate grounds could be at vastly different potentials. The damage could
be to your equipment or home. I'm sure your homeowner's insurance company
would not look kindly at your having removed the power panel ground,
resulting in damage to your home.

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

Leave the existing AC panel ground alone! Make sure that you tie your new
ground to the existing power panel ground. Failure to do that can result in
unnecessary damage in the event of a nearby lightning strike because the two
separate grounds could be at vastly different potentials. The damage could
be to your equipment or home. I'm sure your homeowner's insurance company
would not look kindly at your having removed the power panel ground,
resulting in damage to your home.

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

Tim,

I would wait until you get your 320D. It comes with its own 15v wall
wart (plug in DC power supply). This supply does not use the AC
grounding pin. Mine has not caused a problem in this area.

However, time spent in planning the antenna instaliation will pay
off. The built in active antenna will pick up RF hash from the
switching power supply, metal case and all if the receiver is located
near the computer. I use a simple long wire fed with about 15 ft. of
50 ohm coax, per the TT recomendations. The receiver then can
be located on top of the computer if necessary.

If you have any problems give me a shout.

Bob



On 14 Sep 2003 09:38:09 -0700, (Tim Shoppa)
wrote:

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.

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.

The computer equipment isn't "just a computer". It's several PC's,
an Ethernet hub, a DSL router, a UPS, etc. By experimenting I've discovered
that the computers themselves aren't so bad... but the networking
stuff (a necessity, I'm afraid) is abysmal.

The situation is serious enough that I'm seriously looking into optical
fiber links... anyone have advice for a low-budget solution that way?
If I can put the RX-320D upstairs away from all the Computer stuff, and
run the audio and RS-232 over optical fiber, I'd be in heaven. While
I know where to start for RS-232 over fiber, I don't know anything
about the available audio-over-fiber options.

Tim.

Tim,

I would wait until you get your 320D. It comes with its own 15v wall
wart (plug in DC power supply). This supply does not use the AC
grounding pin. Mine has not caused a problem in this area.

However, time spent in planning the antenna instaliation will pay
off. The built in active antenna will pick up RF hash from the
switching power supply, metal case and all if the receiver is located
near the computer. I use a simple long wire fed with about 15 ft. of
50 ohm coax, per the TT recomendations. The receiver then can
be located on top of the computer if necessary.

If you have any problems give me a shout.

Bob



On 14 Sep 2003 09:38:09 -0700, (Tim Shoppa)
wrote:

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.

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.

The computer equipment isn't "just a computer". It's several PC's,
an Ethernet hub, a DSL router, a UPS, etc. By experimenting I've discovered
that the computers themselves aren't so bad... but the networking
stuff (a necessity, I'm afraid) is abysmal.

The situation is serious enough that I'm seriously looking into optical
fiber links... anyone have advice for a low-budget solution that way?
If I can put the RX-320D upstairs away from all the Computer stuff, and
run the audio and RS-232 over optical fiber, I'd be in heaven. While
I know where to start for RS-232 over fiber, I don't know anything
about the available audio-over-fiber options.

Tim.