[Elecraft] Telephone RFI

[Ron D'Eau Claire]

Have you investigated RF infiltration into the power line going to the phone
'base' unit rather than into the phone line itself?

Ron AC7AC 

-----Original Message-----
     I have two antennas...an unmatched longwire and a vertical.  The 
unmatched longwire interferes with our two line 900MHz phone system a little
bit but 
the vertical almost destroys audible altogether.  While transmitting CW on
the 
vertical, there is a loud clicking sound on both the receiving AND 
transmitting telephone, even though one or the other could be removed by
several miles.

The phone line within the building is all CAT-5 with the exception of the 
last 15' of the base station telephone.  I've tried 10 turns of flat
4-conductor 
telephone cord through a toroid...no difference, (however, I don't know what

the toroid is made of).  I've tried one of the clamp on decouplers with no 
change.  I can't put a coupling capacitor on the line because of our high
speed 
DSL.
...
                               Terry de KC0QZX
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