Analog translators are 4:3, but, just like a digital converter box sending an incoming 16:9 digital TV signal to a 4:3 analog TV, analog translators are able to display 16:9 input in different ways. Namely, for display on the translator, the 16:9 picture can be cropped, letterboxed, or squeezed.
I know when I went to Brainerd the ABC (which is also in analog) is 4x3 pic (with the sides chopped off).
Look again. K16BQ used to crop off the sides of the 16:9 KSAX digital signal, but for about the last year to year and a half, the translator has been an example of broadcasting a 16:9 picture squeezed into the 4:3 analog aspect ratio. If you have an old 4:3 TV, you will be forced to into seeing the programming look too tall and skinny, but with a widescreen TV, all you have to do is stretch the channel to 16:9 and things will look like they are supposed to. I much prefer this method over the old one of cutting the sides off.
The analog KQDS translators have had the KQDS feed always letterboxed within the 4:3 frame since, I believe, the 2009 digital transition (for full-power stations). In any event, this has been going on for several years now. Back before KQDS newscasts and syndicated programming were broadcast in widescreen/HD, that content would show up on the translators as "windowboxed" (black bars on all four sides of the programming).
The analog KMSP translators follow (or followed, in the case of the ones that have been converted to digital) the active format description in use on the main KMSP signal. This means that any remaining 4:3 programming broadcast on KMSP completely fills out the 4:3 frame of the translator, while, as with the KQDS translators, 16:9 programming displays as letterboxed.