[mtippett]

I had just moved to Toronto in about 2002, and was waiting for an interview. I saw one of those microwave horns on a building in the distance. Puzzling over what it was.

Interview started, talking about something glanced over the background and muttered verbally "Microwave" as it hit me that it was a microwave waveguide of some sort.

Didn't get the job...

[walrus01]

The entire lower white donut ring around the bottom of the CN tower is a radome, inside are ptp microwave dishes. It was a lot more relevant in the era before singlemode fiber went everywhere.

Looks like this inside.

https://www.jagelectromagnetics.com/images/jag_cataloug_imag...

Nowadays there is some 2.0GHz band ENG stuff up there for live news gathering stand ups.