[Elecraft] KPA-500 Line-Voltage Issues

[Fred Jensen]

and, though not always well known, ferrite cores in transformers for 
feeding antennas can also saturate with excess RF power.  The resulting 
RF din can be discouraging to neighbor hams and folks watching TV.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Josh Fiden wrote on 7/6/2022 3:01 PM:
> Transformer core can saturate if line frequency is too low. Except I’d be certain KPA-500 uses the same transformer for export to 50Hz countries so your variations are fine.
>
> Many years ago when I was young & dumb discovered this the hard way. Customers would take products with 120v/60Hz line xfrs and run them in Europe 240V/50Hz with a step-down transformer. They would saturate, overheat & pop fuses.
>
> 73,
> Josh W6XU
>
> Sent from my mobile device
>
>



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