Review on π 20V 6.75A 135W AC Charger: Lenovo Y50-70 Y700 Y700-14ISK Y700-15iSK Y700-17ISK Y40-70 Y70-70 Z710 ThinkPad T440P T540p W540 W541 Power Adapter by Adrian Hayes
Charges well, but bad for hams/neighbors
Generates unacceptable radio frequency interference in the 14MHz band for hams (and the 15MHz band) starting a few seconds after the charger is plugged into a laptop. The RFI disappears as soon as the laptop is disconnected from the network. There is no radio frequency interference when the adapter is plugged into the wall but not into a laptop.
- Sturdy construction
- Some minor issues
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