"Larry" wrote

Probably not. It's an electronic pulse generator running a sort of
stepper motor and they are very noisy, RF wise, in the MF/HF spectrum
computers don't worry about. I'm amazed your battery charger isn't
trashing it.

Interesting that this particular fan causes excessive interference while the
two other fans that are built into the Waeco/Adler Barbour refrig unit do
not cause interference. All three are computer type muffin fans.