On 6/1/2020 6:37 AM, stephen shearer wrote:
Ground loops can be another issue.
I was having a "feed back" issue with my KX3/KXPA100 ans solved it
eliminating ground/power loops.
DANGER, WILL ROBINSON!
First, ain't no such thing as a "ground loop." The real cause of
problems we BLAME on this fictional condition is failure to do proper
bonding within our stations and all other "grounds" in our homes.
BY LAW (Electrical Building Codes, usually a version of NEC or based on
NEC), ALL grounds in any facility must be bonded together. At a minimum,
all equipment plugged into the wall must have its chassis bonded to the
green wire in its power cord.
In a ham station, every chassis must be directly bonded to the others by
short, fat copper, AND all equipment that will be interconnected with
the station (rig, computer, audio interface) should get AC power from
outlets that share the same green wire back to the breaker panel.
Lots of detail on this in http://k9yc.com/GroundingAndAudio.pdf and in
N0AX's ARRL book on the topic, on which we collaborated.
73, Jim K9YC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
