KAYO

1150 AM KAYO was on the air in Seattle, Washington from the early 1950s until the early 1980s.  Formats over the years included Top-40, MOR and Country.  This sticker is from their Country period which lasted from 1963 until around 1980.  This website says that they were Seattle's first station with that format and perhaps the first station in the US with a full-time/24 hour Country format.
 

CFQK

A 2005 sticker from CFQK "104.5 Larry FM," an Adult Hits station licensed to Kaministiquia, Ontario near Thunder Bay.  They were also heard on 103.5 FM CKED licensed to Shuniah, ON. 
 

WUCF

89.9 FM WUCF plays Jazz in Orlando, Florida.  The NPR member station was established in 1979 and broadcasts from the campus of the (W) University of Central Florida.
 

WPKO

98.3 FM WPKO is a Hot Adult Contemporary station in Bellefontaine, Ohio.  Their call letters reflect the city's nickname of The (W) PeaK of Ohio because the state's highest point, Campbell Hill, is located in Bellefontaine.
 

WMAX

106.7 FM WMAX was an Adult Album Alternative station in Rochester, New York from 1992 until 1998.
 

WHPB

A window sticker and membership cards(?) from 1390 AM WHPB licensed to Belton, South Carolina.  I think they were a Country music station for most of their history (1956-2004) but were Christian/Religious by the time they switched call letters to WLUA.

WDNA

88.9 FM WDNA plays Jazz in Miami, Florida.  They were licensed in 1977 and went on the air in 1980.
 

WAPN

91.5 FM WAPN is a Religious station in Daytona Beach, Florida.  They've been on the air since 1985.
 

KTMM

1340 AM KTMM is a full-time Sports station in Grand Junction, Colorado.
 

KPDR

KPDR is a Religious station licensed to Wheeler, Texas.  They now broadcast at 90.3 FM and are part of a dozen stations and translators in the Kingdom Keys Network heard throughout north Texas.
 

KLJC

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88.5 FM KLJC was a Contemporary Christian station in Kansas City, Missouri.  They were on the air from 1970 until 2013 when Calvary Bible College (now Calvary University) sold it to the University of Northwestern--St. Paul and they became "Life 88.5" KJNW.

KEYV

"Y93 FM" KEYV was a Country station in Las Vegas, Nevada from 1992 until 1996.
 

CKOC

A 1993 window sticker from CKOC "Oldies 1150" in Hamilton, Ontario.
 

Texas (and Oklahoma) Legends

"Legends 92.9" KSNZ is a Classic Country station licensed to Shamrock, Texas.  They are co-owned with other "Legends" stations in the Texas panhandle and Oklahoma.

K280EU - Amarillo, TX

K296EW - Pampa, TX

                                                                  K255DL - Elk City, OK

 

North American Pirate Relay Service

The North American Pirate Relay Service re-broadcast pirate radio stations using both single-sideband modulation and AM frequencies.  The front of this t-shirt shows the design of their QSL card while the back was a list of the many unlicensed pirates (mostly from Europe) that they relayed.  NAPRS was active between 1992 and 1996.
 

WZEE

A mini-sticker from "Z104" WZEE in Madison, Wisconsin.  They've carried a Top-40 format since the mid-1970s.
 

WYRE

810 AM WYRE has been on the air in Baltimore/Annapolis, Maryland since the mid-1960s. 
 

WRRB

107.9 FM WRRB was a Country station in Syracuse, New York from 1979 until 1988.
 

WOHT

"Hot 95" WOHT was a Top-40 station in Jackson, Mississippi from around 1989 until 1992.
 

WKAF

97.7 FM WKAF was an Urban Adult Contemporary station in Boston, Massachusetts circa 2018.  They later transitioned into a Rhythmic Classic Hits outlet branded as "97.7 The Beat" before flipping to Spanish CHR in 2021.