This has to do with the various color versions of the "circular" test pattern with resolution wedges, as in use during the 1960's/'70's period and another in use in the '80's which was of a different color scheme. Namely, would anyone know if any stations west of the Mississippi River (with call letters starting with 'K') have used either, any, or all of these designs in the period in question as per the links below (re-creations, if anyone asks), and if so, which stations? I know a variation of the first-named was used by KAET, Ch. 8 in Phoenix starting in the 1960's.
1960's: http://www.non-linearproductions.com/underground/1960s-Color-TP-v1a.jpg
1970's: http://www.non-linearproductions.com/underground/1960s-Color-TP-v1b.jpg
1980's: http://www.non-linearproductions.com/underground/1980-Color-TP.jpg
I ask because the majority of stations I've seen that used these patterns were east of the Mississippi, with 'W' calls.
If there were a way to show pictures here, I'd've put them in.
1960's: http://www.non-linearproductions.com/underground/1960s-Color-TP-v1a.jpg
1970's: http://www.non-linearproductions.com/underground/1960s-Color-TP-v1b.jpg
1980's: http://www.non-linearproductions.com/underground/1980-Color-TP.jpg
I ask because the majority of stations I've seen that used these patterns were east of the Mississippi, with 'W' calls.
If there were a way to show pictures here, I'd've put them in.