[SECC] Signal every 61KC??

[SavageBR@aol.com]

I have a signal every 61 KC on all HF bands. It is apparently associated with 
my high speed cable connection/PC. I am using a Comcast cable input to an RCA 
cable modem to a Toshiba S401 Notebook PC.

If I unplug the AC to the cable modem the signal stops. Or, if I unplug the 
RJ45 Lan plug from the modem at the PC the signal stops or if I turn off the 
PC the signal stops. I cannot really tell if the RJ45 Lan cable between the 
modem and the PC is radiating.

Is there such a thing as a shielded RJ 45 Lan cable available? Suggestions??

Thanks,
Bruce  AA4Z