REMEDY of local QRM
Felix Meyer HB9ABX /
1.3.06/ ... / 9.12.2018
Frequently one hears strong QRM on the bands,
not received from the air
but is created locally by any device in the local vicinity.
Then, we first have to find the device that produces this
and then we
have to remove the cause of this interference.
Here follows the story how I solved this kind of problem:
I experienced high
noise and had to develop a method to
reduce this type of noise.
After the corrective action, the noise dropped from S9 to
Complete with circuit diagram and construction hints.
If you are interested in this article, please read
Here is the diagram and
construction guide (in archive.org):