WPKQ

103.7 WPKQ was a Country station from 1996 until 2021.  Licensed to North Conway, New Hampshire and transmitting from atop Mount Washington, WPKQ's signal reached much of northern New England.
 

WMAX

AM 1440 WMAX is a Religious broadcaster in Bay City, Michigan and part of the Ave Maria network of affiliated stations.
 

WHPT

An early 2000s sticker from 102.5 FM WHPT in Sarasota/Tampa, Florida.  Another "Bone"-branded WHPT decal can be seen here.
 

WDNC

WDNC has been on the air in (W) Durham, North Carolina since February 1934.  This early 1990s sticker dates to when they shifted from a Big Band/Adult Standards station to more of a Talk station.  They currently carry a Sports format.
 

WAPW

"Power 99" WAPW was a Top-40 station in Atlanta, Georgia from 1986 until 1992. 
 

KTMS

KTMS has been on the air in Santa Barbara, California since 1937, originally broadcasting at 1220 AM and now 990 AM.  The call letters stand for (K) Thomas More Storke the publisher of the Santa Barbara News-Press and the station's founder.  They currently air a News/Talk format of mostly syndicated programs.  This window sticker is from the mid-to-late 1970s when NBC used a blue and white trapezoidal logo.
 

KPEG

KPEG is a 100-watt, low-power FM station owned by the city of Lompoc, California.  "Just This Side Of The 101" refers not only to their 100.9 FM dial position but the fact that Lompoc sits just west of U.S. Route 101 which runs from Los Angeles to Washington state.
 

KLKC

1540 AM KLKC went on the air in Pittsburg, Kansas in October 1948.  Their sister FM station followed in 1978.  Today "V93" plays Classic Hits while the AM half airs a News/Talk/Sports format.  Both are licensed to Parsons, KS.
 

Key Radio

Key Radio is a network of six Religious stations and translators based in Provo, Utah.  The flagship station is 1450 AM KEYY which originally went on the air in 1949.  Key Radio has two signals on 91.7 FM--KEYR licensed to Richfield, UT and KEYV in Vernal, UT.
 

CKOD

103.1 FM CKOD is a French-language station licensed to Valleyfield, Quebec.  In 2015 they transitioned from AC to Hot AC as "Max 103."
 

Spirit FM Network

Spirit FM began in the mid-1980s when 91.7 KCVO went on the air from Camdenton in the Lake of the Ozarks region of central Missouri.  The Contemporary Christian-formatted network have since expanded to 18 stations and translators covering much of the state. 

KCVZ - Dixon, MO

K281AT - Lebanon, MO

 

K293AX - Jefferson City, Missouri

KCVJ - Osceola, MO

KCVK - Otterville, MO

 

KCKJ - Sarcoxie, Missouri

The rest of these blue stickers are apparently from disused translators as Spirit FM no longer has signals on these frequencies (except 89.7 which has two, one in Marshall and KCVQ in Knob Noster.)
 

KNOX

A t-shirt from "Power 94.7" KNOX in Grand Forks, North Dakota.  They were a Classic Rock station circa 2008.
 

GRRIF

GRRIF is a privately-owned radio station broadcasting from Delémont in a part of French-speaking Switzerland.  They've been playing pop, rock and alternative music since March 2012.  I don't know what's being said in the video below but it appears GRRIF has a huge budget for station-branded promo items.

Trans World Radio / Radio Trans Mundial

What was originally called the Voice of Tangier was founded in the early 1950s with the plan to broadcast to Spain by way of Morocco.  Trans World Radio is now the largest Christian broadcaster in the world, reaching 190 countries and transmits via AM, FM, shortwave, cable, satellite and internet in more than 300 languages.  Major transmission sites include Cyprus, Swaziland, Guam, Sri Lanka, Monte Carlo and the island of Bonaire in the Netherlands Antilles.

WBUC

101.3 FM WBUC was a Country station in Buckhannon, West Virginia for much of the 1990s.
 

WYRF

WYRF is a 37-watt, low-power FM station in Florence, South Carolina.  Now branded as "Radio Free," they play pop and rock music from Christian artists.  The handy video below demonstrates how to apply this sticker to your vehicle.  It appears I failed to tilt the sticker to the recommended 11.5 degree angle.  All apologies to WYRF...I'll do better in the future.
 

WRRG

88.9 FM WRRG is the campus radio station of Triton College in (W) RiveR Grove, Illinois.
 

WOI AM & FM

WOI AM is one of the oldest radio stations in the United States having begun experimental broadcasts in 1911.  Their first licensed transmission took place in April 1922 while the FM sister-station took to the air in 1949.  WOI is owned by Iowa State University and is licensed to Ames with coverage through the entire Des Moines metropolitan area.  Programming is a mix of syndicated NPR and PRI shows along with locally produced Talk programs and BBC news.
 

WKAI

"K100" WKAI is a CHR station in Macomb, Illinois.  They've been on the air since June 1966.
 

WABE

90.1 FM WABE is a public radio station and NPR affiliate in Atlanta, Georgia.  They are owned by the city's public school system which explains the call letter meaning--(W) Atlanta Board of Education.  These giant 15-inch long stickers date to when they primarily aired Classical music which is now relegated to weekends.  WABE has been on the air since 1948 and were probably the first-ever non-commercial station in the southern US, at least on the FM band.