Next message: Jim Ague: "RE: T&T: Fl G 4s 16ft 4M "27""
> Okay, time for some input about what, to me, is a weird problem.
>
> The players: Trace 2512 sine wave inverter
> Delphi XM radio receiver w/ external antenna
> Cambridge Audio system
>
> The problem: The radio and audio systems are 12 vdc powered. When I
> turn on the audio system we get a lot of feedback (hum). If I turn
> off the inverter it goes away. Both the audio system and receiver are
> powered off the same source and both share the same ground (power
> comes from the house bank which is tied to the inverters charging
> system). Shore power on or off has no effect on the noise. If I power
> the receiver w/ an AC to DC adapter there is no noise. The only cure
> is to turn off the inverter which means that the beer is going to get
> warm - darn. Do inverters put noise on the DC buss or is there some
> sort of high frequency noise that saturates the system and is picked
> up by audio inputs, can it be shielded - lots of questions but no
> answers.
>
> Any ideas out there?
>
> Tom
> KK42 in the PNW
>
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