The finished product for grounding will be less pretty! I am using a
single point type grounding system, with one of those copper bars
mounted on insulators as the center.
That bar is mounted on the rear of the desk vertical, (not on the
hutch), just below where the hutch sits, and centered left to right
behind the K3/P3/Amp/Tuner, about 6 inches below the back of the desktop.
Below that will be two 12 connector power strips. All power is fed to
the two power strips from a UPS, so everything save the KPA500 is on
clean power. The UPS will be grounded as the radios are. The KPA500 is
on the same AC circuit, but not on the UPS.
A flat copper strap will run from the grounding bar directly to each
rigs chassis ground point, not via Panduit, but behind the Panduit. All
computers will have the chassis grounded in the same way, but I will use
a #6, not copper sheeting.
I am trying to reduce the potential for ground loops, so I will not be
using the patch panel as a ground connection point, it will just look
like long coax runs to the equipment.
I will be installing an entrance panel, and an additional ground rod
later this summer.
The entrance panel will be connected via #6 to a set of three 8 foot
ground rods, one at the electrical service, one at my shack, just
outside the house, 15 feet away from the service ground, and a third, 15
feet further down the house, all connected with #6 as well.
All incoming coax will be fed in via the entrance panel. The entrance
panel is a NEMA4 weatherproof box, 3 by 2, with a 1/4 inch copper sheet
bolted to the raised supports in the rear of the box.
The copper plate inside the entrance panel is where the station outside
ground system connects, and where the stations inside ground system
connects via a Polyphasor on each coax cable, and a #8 copper wire.
On the rear of the desk will be a CM Choke I constructed-- RG-400, on
two FT-240/31 cores.
At the antenna, is coax, feeding the Entrance panel. I am conflicted on
grounding the base of the antenna, and possibly adding another set of
Polyphasors there... More reading is needed on this... Any suggestions
are welcome...
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 4/22/20 10:57 AM, Jack Brindle wrote:
Dave;
Perhaps this has been asked, but what are you doing for equipment bonding?
73!
Jack, W6FB
On Apr 22, 2020, at 10:22 AM, Dave Cole <[email protected]> wrote:
Please thank him for that tip!!! I will be using that from now on!!!
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 4/22/20 10:17 AM, David Haines wrote:
More advice from my robotics engineer son, who uses Panduit all over his robots!
"The most important secret of Panduit: Put a rubber band across the top between the
tabs every couple of feet to keep things inside while filling it up. Easy to hook/unhook
while getting everything in place."
david
KC1DNY
KX3 right now, but ... . Good thing the K4 isn't shipping yet!
On 4/21/2020 11:48 PM, Dave Cole wrote:
Hi Clay,
I used the folks called Front Panel Express at:
https://www.frontpanelexpress.com/
Took a few hours to learn the free software they provide, but overall it was
easy. Not cheap, but very good results...
They even have a version that runs under Linux...
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 4/21/20 8:03 PM, Clay Autery wrote:
I ABSOLUTELY understand, and identify! <big smile>
Could you clue us in on how you sourced/built that panel? I'd love to have
access to something like that!
73
______________________
Clay Autery, KY5G
(318) 518-1389
On 04/21/20 21:49, Dave Cole wrote:
Thanks Clay... I decided to add the patch panel because I am sick of haveing
to rewire everything I want to change an antenna! That and it feeds my OCD
issues. :)
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 4/21/20 7:07 PM, Clay Autery wrote:
That is some really first rate work.... <big smile> I dig it when folks are
fastidious about their cable routing and otherwise organize things logically.... and
NEATLY!!
73,
______________________
Clay Autery, KY5G
(318) 518-1389
On 04/21/20 18:53, Dave Cole wrote:
https://www.nk7z.net/rf-patch-panel/
I am undertaking a full rebuild of my operating position, note the Patch Panel
does not say K3 on it... That means I can replace things with a K4 later... :)
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