With their latest change in management, CKWX (AM 1130) needs to put more effort into working with the FCC on the 'critical hour' interference from the Russian-language station in Mt Angel, Oregon that is aimed northward. It seriously chews up its signal on 1130 for a couple of hours before sunset before they reduce power. It makes listening to the only all-news station in the region impossible (and it sounds like Russian jamming from the good ol' days!). I've even found it a problem on the Canadian side of the border in Abbotsford and Langley. But I don't count on anyone doing anything about it except lamenting why people aren't listening. Or telling them to listen to their HD-2 outlet. I tried to buy an HD capable radio last weekend in Surry BC - none I could find are on sale.All very good points. The one saving grace for AM that I see has to do with geography. Even in Vancouver, there are tons of communities, towns, and regions that are outside of Vancouver that have no significant broadcast FM radio coverage. The major 50kw stations might be the only radio stations a person in these areas can hear reliably during the day.
Though, I think that geography has also handicapped many of these stations. Looking at nearly all of the coverage maps, most of the signal is blasted west and northwest to Vancouver Island. The AMs start to get choppy as you travel east, with even CKWX 1130 (arguably the most powerful station in town) having serious reception issues by the time you reach the Fraser Valley. That can’t be a good thing, since you’d want your core listening area to be serviced well by your station.
From an engineering standpoint, it seems like other west coast cities don’t need to worry about this problem nearly as much.
Rule number one for radio success: You have to have a good signal people can hear without effort. So don't be surprised when listenership goes down, with overly jammed signals competing in formerly protected zones adds to the decline.
Anyone remember when AM 900 was on the air from Victoria? "Village 900" was run by a small college, until they decided they didn't want to do it anymore and shut it down. It had a good signal into the Seattle suburbs and I quite enjoyed the world music and BBC news it aired.