1.6 MHz with CIAT air conditionners?

We have one in our building and all signals I measure have a soft peak at

1.6 MHz in their spectrum. With an analog scope I see damped oscillations at 1.6 MHz with a random repeat. When I come close to the CIAT enclosure with an AM radio receiver I hear a big noise around this frequency.

Am I the only one?

--
Jean-Pierre Coulon
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Jean-Pierre Coulon
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