Instead of grounding each piece of equipment separately to a ground rod,
try "bonding" instead. Connect the KX3 to the PX3 with heavy wire (or
braid), then connect the KX3 to the KXPA100 with heavy wire - from the
KXPA100, connect to the ground rod.
You should see a reduction is audio noise on the PX3 (which can be made
worse by separate ground wires) and the KXPA100 and KX3 should 'play'
better together.
If you want more information on bonding, look at the documents produced
by Jim Brown K9YC - he posts frequently on this reflector.
One thing to keep in mind - grounding everything (the KX3 and PX3 are
'grounded" by virtue of the bonding wires) will not do anything about RF
pickup - Mother Earth is not a sink for RF. The grounding is for AC
main safety and some protection against lightning and static charges
(but not a direct strike).
73,
Don W3FPR
On 11/27/2018 4:58 PM, richard gilley wrote:
Hi,
Following F. Cady advice on grounding the station equipment to a common
bus, I did so. My set up includes a KXPA100 with the ATU, the KX3 and PX3. Now
I noticed that the KX3 does not always indicate the same antenna as the KXPA100
when I switch bands. Sometime it does and then does not, or will change after
5 to 10 seconds. I have a Vertical for 30 meters, and a Dipole for 40 and 20
meters, the KXPA100 switches immediately.
I have powered down all the equipment, restarted and sometime this does the
trick and all is well. But sometime it does not. If I remove the ground from
the KX3 and the PX3 the issue goes away.
The equipment ground is #18 stranded, < 10” to the bus, the bus has a copper
braid to the KXPA100, the antenna grounds and on to the station ground rod 8’ feet
outside the shack.
At the moment all is OK. I just do not know the root cause. Any ideas or
thoughts.
R Gilley
AD1G
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
