[comp.dcom.telecom] Information Wanted on Line Noise Filter

ken@sharkey.cc.umich.edu (Ken Jongsma) (02/26/91)

Several BBS's and now the latest Hello Direct catalog, sell something
to eliminate "hissing, scratching and humming" from your telephone
line.
 
My question is: What is this device and what exactly does it do?
 
The Hello Direct catalog claims it removes up 30db of EMI. It costs
$10 and looks like a very small modular extention cord.
 

Ken Jongsma                                  ken@wybbs.mi.org
Smiths Industries                            ken%wybbs@sharkey.umich.edu
Grand Rapids, Michigan                       ..sharkey.cc.umich.edu!wybbs!ken