[RFI] Spectrum Cable Boxes
qrv at kd4e.com
qrv at kd4e.com
Sun Nov 10 21:28:35 EST 2019
What about a battery with an analog trickle charger?
The analog trickle charger should be RF-quiet.
And wouldn't the battery isolate any PS RFI?
David KD4E
> Update to the Spectrum Cable box testing,
>
> What I have tried.
>
> - RF Chokes (Material 31) on power, HDMI & RG6 - DID NOT FIX RFI
> - Tightly wrapping the entire box in foil. - DID NOT FIX RFI
> - Putting the box on a 12v battery - VIOLA - NO RFI
>
> So now that we know its the power supply, I have to find a 12v 3A wall
> wart that is not affected by RFI. Suggestions?
>
> Thanks!
>
> Regards,
>
> Anthony (N2KI)
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