Topband: 160m vs DSL modem

[N1BUG]

Fellow topbanders,

I know this is not a new subject but I would appreciate any 
suggestions you may have. I did quite a bit of web searching before 
posting here, but didn't come up with much. Please reply direct so 
we don't clog up the reflector with this.

I knew DSL modems and 160m don't mix, but I am trying it anyway. 
It's the only way I can have anything but dial-up. The problem, of 
course, is that when I transmit on topband the modem loses sync. It 
only takes 50 watts to do it. Not good.

Would winding several turns of the DSL and/or modem power cables on 
a toroid potentially be helpful? I'm thinking common-mode 
suppression here. Would 43 or 77 material be better? If this is 
worth trying, I will order some cores Monday.

Any other thoughts?

I have considered going to shielded telephone wiring in my home, but 
am not sure that would accomplish anything as I would still have the 
100 foot long unshielded parallel-conductor drop from the pole to my 
house, which is not far from my 160m antenna.

I have 768K DSL, so I assume it uses frequencies well below 1.8 MHz. 
Is it possible to use a low pass filter on the DSL line to attenuate 
1.8 MHz while letting DSL signals pass? I've never seen nor heard of 
such a device...

Thanks,
Paul N1BUG