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Old 08-26-2017, 12:15 PM   #11
diver dave
City: Fairport, NY and Palm Coast, FL
Country: United States
Join Date: Jan 2017
Posts: 1,785
Originally Posted by olegreg View Post
When it got to the inverter/charger, it went away on the main radio and it's remote. The dock master stood on the dock and reported what he heard. We repeated this with the main, remote and back up set. I had my HH listening too. Just for kicks I transmitted on HH and he heard the hum also, but a lot fainter.
Happened to discuss this with a marine systems guy, and he mentioned that the Xantrex modified sine unit with its squared waves and harmoncs is well known for this. Xantrex now offers a pure sine unit that will be a drop in. I can keep the Link 2000 and network including the Pathmaker.
Expensive solution. For now through the rest of our cruise in BC inside passage, I will shut down the charger before I transmit.
Wow; this is one evil charger. If you were closer, I'd like to investigate this one. I do EMC stuff at work and have a pretty extensive radio background.
As a general rule, if you can listen to your transmit audio on another radio, and the mic is quiet, you should not hear anything. (transmit hum and noise spec).

Is the Xantrex in invertor mode or charger mode?
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