Another noisy garage door causing havoc on HF.

 group of hams decided to use QRM guru to help with some unknown RF noise.  Using the DF Loop the garage door opener was found to be the cluprit

The garage door controller was removed and taken to the workshop for further analysis.

Model Herculife RDO-V12


On location there was a steady source of HF noise that was affecting the ability to receive weak transmissions.   After applying a process of elimination by shutting down various areas of power, the interference was proven to come from two roller door motor control units.  Both door units were generating noise – even while the door was not in motion.   This video shows how the process of investigation and how one of the door units was upgraded (powe supply replaced) to eliminate this noise.


Key words: “replace power supply”, “noisy psu”, “garage door psu”