[Elecraft] KPA500 Hum

[John_N1JM]

Thanks Bob. Yes great amp.
73, John N1JM


Bob McGraw - K4TAX wrote
> Yes it is normal to hear a slight hum when the Mains switch is on.  Also 
> the left side may be slightly warm.    When the Mains switch is on, the 
> low voltage power supply is on.    This supply is for the logic and 
> processing.
> 
> See the IMPORTANT section on page 14 of the manual for further details.
> 
> Wonderful amp.   Love mine.
> 
> 73
> 
> 
> 
> 
> 
> 
> 
> Bob, K4TAX
> 
> 
> 
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