Broadband forum: Treadmill interferes with DSL modem

I have to think the treadmill motor/speed control might be kicking heavy amounts of induction current or back EMF into your local AC lines. It might help to move something to an outlet that's on a different xformer phase but can't say for sure. If you can't do that, I'd think the simplest solution might be a conditioner such as is commonly sold for some AV applications. APC (American Power Conversion) makes such and Tripplite is another common name in the US that offers a variety of power stabilization products. I'm also thinking it wasn't good to defeat the ground on the treadmill. You could possibly add a couple of filter capacitors. I can't come up with proper values but you'd need one from both the hot and neutral sides going to ground. A google search for controlling back EMF and DC motor induction for ideas more expert than mine.

I would think there is an easy fix. Don't exercise and surf the net at the same time, hehe. Just want to say that the treadmill may not be the ONLY causes. DSL..I been there.

The treadmill maker is going to send me an AC line noise filter, free of charge, shipping paid. 'Sounds to me like they know that there is a problem, although, they said that their equipment complies with this and that. It should prevent interference with AM radio (guess I can't workout and listen to radio in the evenings). We'll see if it solves the DSL problem. Should have the filter in about a week.

I have the same problem: Schwinn treadmill and AT&T Netgear B90 DSL modem. When the treadmill runs, access to the Internet stops. Turn off the treadmill, and connectivity resumes. It is plain that the treadmill causes interference.

Using an extension cord, I plugged the treadmill into an outlet 40 feet away (different circuit). This worked, but I don't want to use an extension cord nor move the treadmill.

Finally, my wife tried the DSL filter dongle from our original (now broken) 2WIRE modem. This is the part that connects between the DSL modem and the wall phone jack. It worked. Apparently, the Pace American filters supplied with the AT&T Netgear modems are simply junk.

Monte