Application to keep things legal

One of the (many) questions on my Special Flight Operations Certificate application (SFOC) here in Alberta asks about “Measures for preventing or mitigating radio frequency interference”. Does anyone here know what the heck they are asking?
Do I really need to add a frequency scanner to my gear, too?
As a matter of fact, on the backside of the controller itself, the blurb reads:
“…This device must accept any interference received, including interference that may cause undesired operation.”