[Elecraft] Telephone RFI

[G3VVT at aol.com]

Terry,
 
As Larry, W2LJ mentions K-Com filters are available for you in the USA.  
Their website is:
 
http://k-comfilters.com/index.asp 
 
Came across their website when searching for filters to cure telephone  
interference. The local telephone company used to supply suitable filters free  of 
charge, but times have got difficult as they no longer want to know about  
such problems. All the surrounding houses adjacent to me have their telephone  
lines overhead and parallel to my 80m antenna. As there is no scope to move  
either, the phone company at that time fitted  AM  broadcast interference filters 
consisting of a couple of ferrite  cored chokes, one in series with each leg 
of the phone line which seemed to  be fairly successful in keeping my SSB out 
of the phones.
 
Sadly the phone company no longer supply filters or even stock them. A EMC  
suppression ferrite ring on the incoming phone line with as many turns as you  
can wind on and as close as possible to the affected phone can help.
 
Not sure if now there may be a conflict with the requirements of internet  
broadband feed when applying some of the earlier phone  interference suppression 
methods.
 
Bob, G3VVT
K2 #4168