After replacing the home WiFi access point from an older Meraki MR-16 (firmware hacked with Cucumber Tony) to a Ubiquiti AC-PRO I found that both the noise floor below 5 MHz increased quite a bit and there were a large number of HF signals radiating from the unit itself. It appears that online research confirms that other Ubiquiti products have the same issue with HF RFI.
Attempts to quiet it with ferrites and other suppression methods failed. An RF sniffer revealed that it is actually radiating from the device itself.
The Ubiquiti is going back to Amazon and a new TP-Link unit is on the way to replace it. I am hoping that this quiets the HF spectrum RFI that the Ubiquiti device caused.
Examples of the RFI around 1953 and 3906 kHz can be heard.
