Examples of GOOD callsigns here in Denver
KIMN Originally assigned to AM 950 back in the 1950s who used them to become one of THE GREATEST Top 40 stations ever. Now, they're on FM 100.3 as Mix 100
KOSI Heritage call for 101.1 (Always pronounced as Cozy 101 although when the station had the Beautiful Music/MOR format, the talent would sometimes use 101.1 Today, not so much so although the jocks will occasionally use 101.1 too)
KUSA Self-explainatory - United States Of America
KMJI Used by 100.3 as Majic 100 after its KLIR days
KLIR Speaking of KLIR, 100.3 was known as KLIR 100 (Pronounced as Clear) & had a Beautiful Music/MOR format like KOSI did)
KPKE The original "Peak" station at 95.7 (Now Top 40/CHR KPTT Party 95.7)
KXPK The current "Peak" station at 96.5 (Now a Mexican station using the same call)
KDEN Was an All-News Radio station on 1340 back in the day. Now the Telemundo O&O in Denver
KNUS Call originated on an FM station in Dallas, TX by Gordon McClendon (Also owner of KLIF-AM) before moving to Talker AM 710 in Denver (Where it sits today even after a long hiatus off the air back in the 1990s)
Examples of BAD callsigns in Denver
KRXY Known as Y108 even though it was really 107.5 playing Top 40/CHR & digital displays on FM Radios have never gone beyond 107.9 (The station is now KQKS & still (Supposedly) playing Top 40/CHR music)
KQKS Just the calls are bad for ANYTHING but a KISS format. Station started out as a Top 40/CHR on 104.3 (Now on 107.5 still with the same format)
KUVO Worst call I've seen yet. No idea why this call even exists
KTLK What puts this one on the list is it's more widely known in Denver as the call of a DISCO station on 1280 (Spent time on 760 as a Talker. Now KTLK-AM is a Clear Channel station in Los Angeles while KTLK-FM was a station in Minneapolis, MN)
KMGH Why on earth McGraw Hill dropped the heritage KLZ call in favor of this, I have no clue
Those are the ones I can think of.....
Cheers & 73 ;D