In addition to operating from a battery isolated from the solar system,
I would recommend that you do a quick test - remove all cables from the
K3S except the power cable and a coax to a dummy load. Power down all
power supplies in your station, including any desk lamps.
Go into Transmit by tapping the XMIT button.
Is the hum still present? If not, then start connecting things to your
K3S one at a time, doing the same test after each thing connected.
Of course, if the hum is present with nothing connected, contact
[email protected] - but I cannot imagine a hum with harmonics of 60
Hz being induced if you take away all the 60 Hz operated sources in the
area.
73,
Don W3FPR
On 4/26/2019 5:36 PM, K8TE wrote:
The word that struck my attention is "solar" and the possibility of that
controller causing noise. When you were connected to just the battery and
dummy load, was the battery disconnected from the solar system? And, at
what level was the buzz relative to a full power carrier?
Every transmitter has some noise on its signal. Specifications and FCC
rules in some cases call for a specific ratio. I can't imagine a factory
reset solving a problem like this. Be certain you have saved your
configuration first. Solving issues like this is not magic, but sometimes a
mystery.
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