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Z-Wave devices - Can be serious generators of RF noise
My amateur radio station has suffered from high ambient noise in our home from day one, nearly six years ago. Z–wave has been in service in our home, also from day one. In the past few weeks, I finally put all else aside and went on a mission to find my problem, and thanks to the awesome information available on the panadapter and the waterfall of my FLEX 6400, I have tumbled to the fact that the Leviton DZ15S in-wall switches are extremely high generators of RF interference. Has ANYONE researched and learned any useful lessons on this problem? I did not find where any of the other 23 Z-wave devices are interference generators, which is good. It is my hope to share my experience with others that may have the same problem and maybe not even know it, as well as to hopefully gain from the experience of others.
On the FLEX, with virtually all of the rest of our home powered down except for the breaker that serves our great room and back porch, I found that the above switch device would raise the noise floor on the radio by a whopping 17 dB!!! Furthermore, it is interesting that the interference is far greater when the switch is OFF than when it is ON. Seventeen dB is BIG! In addition, I learned that the DSL line coming into our home is a huge interference generator! Our refrigerator is no slouch at creating highly visible noise and interference, particularly when the door is opened or closed.
I seriously wonder how compatible Z-Wave technology is with amateur radio, and I'm so thankful that the FLEX 6400 could be such an incredible tool for ferreting out my problems. I have a 3+ page writeup on what all I found and would share it if it would be of value to anyone.
Beyond that, I wish you all a very Merry Christmas and a far better and Happy New Year!
PS: All of my testing so far has been in the 80M amateur radio band, which is from 3.5 MHz to 4.0 MHz.
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