Are you from a "K" radio area or a "W" radio area?

[ilikeverin]

Growing up in the Twin Cities, there was mostly a mix, but more K than W. Buffalo is all W of course, although presumably we can pick up some C.

[DINGO Joe]

Like other Mississippi River metros, New Orleans has both, but unlike St. Louis and the Twin Cities, the dominate side is the east bank, so mostly W

[MaxQue]

We have stations with a name, many of which include "AM" or "FM", as well as their channel number included in the nsame as well.

For example:
The Fan 590 = 590 AM
102.1 The Edge = 102.1 FM
Q107 = 107.1 FM

Your stations begin with a C (like all of Canada). 102.1 The Edge is CFNY, Q107 is CILQ and The Fan 590 is CJCL.

Do you mean legally? In terms of marketing and self-promotion I've never heard those names.

They don't use that for marketing anymore (was quite common in the 90's through), but legally, that's the case.

[Badger]

I think in general, "K" stations are west of the Mississippi and "W" stations are east of the Mississippi. In Idaho and the area where I lived in Texas, all of the stations seem to start with "K." In upstate New York, the few stations I can think of start with "W." I've also heard of the NPR station WBEZ in Chicago.

This.  Although, some radio stations date to before that distinction was made.  In Kansas City, most of the stations begin with "K", but we also have WDAF and WHB.

WDAF-TV is also the call sign of one of our local TV stations.  All the other TV stations begin with "K".

I can't say for sure, but I think "C" is nationwide in Canada.  I've seen stations in Mexico near the U.S. border beginning with "X", but I don't know if that is nationwide too.

You are both correct. As the first commercially broadcasting radio station - - its first broadcast with the 1920 presidential election results - - KDKA in Pittsburgh was also grandfathered in. As was it's local CBS affiliate TV station.

[TDAS04]

K.