KIOO

KIOO is a Classic Rock station licensed to Porterville, California.  The call letters reflect their former "K100" branding.

KCBX

90.1 FM KCBX is a public radio station based in San Luis Obispo, California.  They are also heard on a handful of translators allowing their programming to be heard throughout California's Central Coast.  KCBX went on the air in 1975.

CFFR

Calgary, Alberta's 660 AM CFFR (Calgary F Family Radio) began as an Oldies station in 1984.  In 2006 CFFR flipped to their current all-News format "660 News".

KQMQ

KQMQ is a Reggae/Contemporary Hawaiian station in Honolulu, Hawaii.  "Da Pā'ina" (roughly translated as "large party" in Hawaiian) flipped to this format in early 2011, the same weekend as Bob Marley's birthday.  The sticker bears a symbol which appears on the Kanaka Maoli ("native Hawaiian") flag which consists of a kāhili and two crossed paddles.
"Jammin 93.1" was KQMQ's branding circa 2000 when they carried a CHR format.

KBUX

94.3 FM KBUX plays a mix of Oldies, Adult Standards and MOR music in Quartzsite, Arizona.

Northern Sound

Northern Sound Radio was established in 1989 with headquarters in Longford, Ireland.  In 1995 their license was combined with Shannonside FM to form the first regional station in the country.  Northern Sound is heard on three frequencies: 96.3 FM from Monaghan, 94.8 FM from Cavan and 97.5 FM from Carrickmacross.

Radio Expres

Radio Expres began broadcasting in Antwerp, Belgium in 1982.

WTOF

98.1 FM WTOF (W Tower Of Faith) was a Religious station in Canton, Ohio from 1961 until 1997.

WMTK

WMTK "106.3 The Notch" is a Classic Hits station licensed to Littleton, New Hampshire.  Their name comes from the many mountain passes ("notches") in the area.

WJR

Detroit, Michigan's WJR began in 1922 as WCX and operated at 580 AM.  In 1925 they were purchased by the Jewett Radio & Phonograph Company (the JR in the call letters).  They began broadcasting at 760 AM in 1941.  WJR's 50,000-watt, clear-channel signal can be heard, even during the day, here in Dayton, Ohio--a distance of over 200 miles.  In 2005, the station ceased to be the flagship station for the University of Michigan and began flagship duties for Michigan State.  More WJR stickers can be seen here.  And here.

CKLZ

CKLZ in Kelowna, British Columbia became "Power 104" in 1999.  They began as a Classic Rock station but flipped to Active Rock in 2007.

WRAF / WEPC

90.9 WRAF and 88.5 WEPC are simulcasting Contemporary Christian stations in northeastern Georgia/northwestern South Carolina.  They are owned and operated by Toccoa Falls College in Toccoa Falls, GA.

WAJI

A 1988 decal from Adult Contemporary "Majic 95.1" WAJI in Fort Wayne, Indiana.

KTDR

KTDR is a Hot AC station in Del Rio, Texas.  "Mix 96" has since been re-branded as "The Best".

KORR

Hot Adult Contemporary station 104.1 KORR is licensed to American Falls, Idaho.

KGGI

KGGI has been a CHR/Rhythmic Top-40 station in Riverside, California since around 1980.  The call letters are derived from their frequency--two lowercase Gs and the letter I sorta looks like 99.1

KARR

1460 AM in Kirkland, Washington went on the air as KYAC in 1965.  They became KARR in 1984 and shifted formats from MOR to Adult Standards before becoming part of the Family Radio network.

EDIT:  I just figured out that the bottom sticker is actually from a completely unrelated KARR in Great Falls, Montana that existed from 1960 to 1984.

Northwest Public Radio

Northwest Public Radio operates 19 radio stations and 13 translators across Washington, Oregon and Idaho.  Programming consists of public radio News, Classical, Jazz and Folk music and Talk shows.  NWPR's flagship station is 1250 AM KWSU owned by Washington State University in Pullman, WA.

WTRG

WTRG was an Oldies station licensed to Rocky Mount, North Carolina.  For a few years in the 1990s, "Oldies 100.7" was owned by Tom Joyner.  No, not that Tom Joyner.  This Tom Joyner.

KYGO

98.5 KYGO has been a Country station in Denver, Colorado since 1979.