My wife was complainig that everytime I start to run on trademill - ADSL was disconnected. I verified that myself.
First I thought it's the noise the PWM motor derives to mains line. I could see some spikes with oscilloscope from 12V powersupply when running the machine so I was pretty sure it was the case. I fed the ADSL modem/router with 12volt battery instead of 12V supply- but treadmill still disconnets the broadband so the line wasn't the issue.
I figured out that it has to be RF noise which is induced to telephone line hence distracting the ADSL.
Is there any fix for problem?