Spare broadcast call signs

Available WU call signs

442 of the 676 WU four-letter combinations aren't held by any broadcast station. W calls go to stations east of the Mississippi River. Click any call to check it.

Spotted a call you want? Verify it before filing.

The call sign search the FCC offers covers broadcast stations only. Our free Call Sign Check adds shortwave stations and FCC ship licenses, flags a call that was recently released or is moving to a new owner, and gives the rule behind each result.

WU call signs at a glance

Of the 676 four-letter WU combinations, 234 belong to broadcast stations and 442 are spare.

Those 234 calls are used by 246 stations (a call can be shared across services, like KXXX and KXXX-FM):

FM: 124
Full-power TV: 35
LPFM: 33
AM: 30
Low power TV: 22
Class A TV: 2

WU stations on the air include WUAB (Full-power TV, Lorain, OH), WUEC (FM, Eau Claire, WI), WUKV (FM, Trion, GA), WUNA (AM, Ocoee, FL), WUPN (FM, Paradise, MI), WUSO (FM, Springfield, OH).

The newest WU call: WUHC-LP, a new station's first call sign on August 6, 2025.

Among the spare ones: 1 used by a ship or shortwave station, 2 old ship calls whose license lapsed. Run any of them through Call Sign Check before you file.

All spare WU call signs

Just released Used by a ship or shortwave station: check before you file Old ship call (license lapsed)

WUAA WUAC WUAD WUAE WUAH WUAI WUAJ WUAK WUAM WUAN WUAO WUAP WUAQ WUAR WUAS WUAU WUAV WUAX WUAY WUAZ WUBC WUBD WUBH WUBI WUBM WUBO WUBP WUBQ WUBV WUBW WUBY WUCA WUCD WUCE WUCG WUCI WUCJ WUCK WUCM WUCN WUCQ WUCU WUCV WUCY WUDA WUDB WUDC WUDD WUDF WUDG WUDH WUDI WUDJ WUDK WUDM WUDN WUDO WUDP WUDQ WUDU WUDV WUDY WUEA WUEB WUED WUEE WUEF WUEG WUEH WUEI WUEJ WUEL WUEM WUEN WUEP WUEQ WUER WUES WUEU WUEV WUEW WUEX WUEY WUFA WUFB WUFC WUFD WUFG WUFH WUFI WUFJ WUFK WUFP WUFQ WUFS WUFU WUFV WUFW WUFX WUFY WUFZ WUGB WUGD WUGE WUGF WUGG WUGH WUGI WUGJ WUGK WUGL WUGP WUGQ WUGS WUGT WUGU WUGV WUGW WUGX WUGY WUGZ WUHA WUHB WUHD WUHE WUHG WUHH WUHI WUHJ WUHK WUHL WUHM WUHN WUHP WUHR WUHS WUHV WUHW WUHX WUHY WUHZ WUIA WUIB WUID WUIF WUIG WUIH WUII WUIJ WUIK WUIL WUIM WUIO WUIP WUIQ WUIR WUIU WUIV WUIW WUIX WUIY WUIZ WUJB WUJD WUJE WUJG WUJH WUJI WUJJ WUJK WUJL WUJN WUJO WUJP WUJQ WUJR WUJS WUJT WUJU WUJV WUJW WUJY WUJZ WUKA WUKB WUKC WUKD WUKE WUKF WUKG WUKH WUKI WUKJ WUKK WUKM WUKN WUKO WUKP WUKT WUKU WUKW WUKX WULA WULE WULG WULH WULI WULJ WULN WULO WULP WULQ WULU WULW WULX WULY WULZ WUMA WUMD WUMH WUMI WUMK WUMQ WUMU WUMW WUNB WUNQ WUNS WUNT WUNX WUNZ WUOB WUOC WUOD WUOE WUOF WUOI WUOJ WUOO WUOP WUOQ WUOR WUOS WUOU WUOV WUOW WUOX WUOY WUOZ WUPB WUPD WUPH WUPO WUPP WUPQ WUPU WUQA WUQB WUQC WUQD WUQE WUQF WUQG WUQH WUQI WUQJ WUQK WUQL WUQM WUQN WUQO WUQP WUQQ WUQR WUQS WUQT WUQU WUQV WUQW WUQX WUQY WUQZ WURF WURG WURJ WURM WURO WURP WURQ WURR WURS WURT WURU WURW WURZ WUSD WUSE WUSK WUSS WUSU WUTA WUTE WUTG WUTI WUTJ WUTN WUTO WUTP WUTS WUTW WUTX WUTZ WUUB WUUC WUUD WUUE WUUG WUUH WUUI WUUJ WUUL WUUM WUUN WUUO WUUP WUUR WUUS WUUT WUUV WUUW WUUX WUUY WUUZ WUVB WUVD WUVE WUVH WUVJ WUVK WUVL WUVO WUVQ WUVU WUVV WUVW WUVX WUVY WUVZ WUWA WUWB WUWC WUWD WUWE WUWH WUWI WUWJ WUWK WUWL WUWN WUWO WUWP WUWQ WUWR WUWV WUWW WUWX WUWY WUWZ WUXA WUXB WUXC WUXD WUXE WUXF WUXG WUXH WUXI WUXJ WUXK WUXM WUXN WUXO WUXQ WUXR WUXS WUXT WUXU WUXV WUXW WUXX WUXY WUXZ WUYA WUYB WUYC WUYD WUYE WUYF WUYG WUYH WUYI WUYJ WUYK WUYL WUYM WUYN WUYO WUYP WUYQ WUYR WUYS WUYT WUYU WUYV WUYW WUYX WUYY WUYZ WUZA WUZB WUZC WUZD WUZE WUZF WUZG WUZH WUZI WUZJ WUZK WUZL WUZM WUZN WUZO WUZP WUZQ WUZS WUZT WUZU WUZV WUZW WUZX WUZY

← WT call signs All prefixes WV call signs →

Spare call signs by prefix

K call letters: west of the Mississippi River

W call letters: east of the Mississippi River

Spotted a call you want? Verify it before filing.

Current to October 16, 2026, drawn from FCC records for stations, ships and shortwave, with a fresh update each morning. Not an FCC product.