On 8/7/2019 11:02 AM, Michael Arnold wrote:
This method may result in some low-level 60 and 120 Hz audible ground loop hum
when AC powered, particularly with the powered speaker connected,
Power line hum and buzz can be prevented by 1) getting power for all
interconnected equipment from the same AC outlet, or from outlets whose
Green Wires are bonded together, AND 2) bonding from chassis to chassis
of all interconnected equipment, AND 3) proper bonding of all grounds in
the home, including ground from that interconnected equipment in the
shack. All three are necessary. There's a tutorial on this at
k9yc.com/publish.htm
73, Jim K9YC
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