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
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