Some nighttime skywave from Canada would be welcome for motorists in Oregon and California, too. But I think they have a complicated directional array of at least six-towers just north of the border, and what we can get this way suffers from a lot of phasing at night, too.
I wish more Canadians stations tried to reach across the border toward Seattle, but with AM 600 going dark (which was the only other Vancouver AM you could get fairly well iN Seattle if you don't count the heavy jamming on CBC-690 from KIRO), the dial seems to keep getting smaller and smaller.
You guys ever listen to the CBC on AM540 at night? It's probably the most powerful 50kw signal in the US or Canada from Saksatchewan, with its transmitter on a large salt water lake between Regina and Saskatoon But it, too, is now suffereing from some interference that wasn't there so much a few weeks ago. But it does make for good nighttime radio in the car.
I'll probably start a new thread one of these days about technical issues of AM signals in the Seattle area. I've traveled a lot and listened closely to the AM dial for years in many cities, and have never heard such AM splatter anywhere to the extent I find from KIRO, KOMO, KIXI, and now even KCIS. You don't get it from the big stations in LA, where Tijuana stations are jammed in 20khz from LA's 50kw-ers. Nor in SF, Detroit, Cincinnati, etc.
It's different from the big hum that some AM-HD signals were causing at night. I'm talking about heavy sideband splatter that travels past 20 khz for at least 50 miles from the transmitter site. (And, oddly enough, the splatter only went away when KIRO ran an old time radio show on Sunday nghts a couple of years ago, except for during the commercials). I recall being able to hear CBC from Vancouver on AM690 loud and clear some years ago in Seattle - but even tho' it's still there, albeit coming from an ageing AM transmitter, the KIRO interference makes it unlistenable all the way till you get north of Marysville.
