Spare broadcast call signs

Available KX call signs

365 of the 676 KX four-letter combinations aren't held by any broadcast station. K calls go to stations west 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.

KX call signs at a glance

Of the 676 four-letter KX combinations, 311 belong to broadcast stations and 365 are spare.

Those 311 calls are used by 328 stations (a call can be shared across services, like KXXX and KXXX-FM):

FM: 191
AM: 49
LPFM: 37
Full-power TV: 23
Low power TV: 22
Class A TV: 6

KX stations on the air include KXAA (FM, Cle Elum, WA), KXEG (AM, Phoenix, AZ), KXJK (AM, Forrest City, AR), KXMR (AM, Bismarck, ND), KXRI (FM, Amarillo, TX), KXUA (FM, Fayetteville, AR).

The latest KX call sign change: became KXST on February 12, 2026.

Among the spare ones: 2 released in the last 60 days, 1 used by a ship or shortwave station, 8 old ship calls whose license lapsed. Run any of them through Call Sign Check before you file.

Just released

KXTE KXAM

All spare KX call signs

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

KXAB KXAD KXAE KXAG KXAH KXAJ KXAL KXAM KXAT KXAU KXAW KXAY KXBC KXBD KXBE KXBH KXBI KXBM KXBO KXBP KXBQ KXBU KXBV KXBW KXBY KXCE KXCF KXCG KXCK KXCN KXCO KXCQ KXCT KXCU KXCW KXCX KXCZ KXDB KXDC KXDH KXDK KXDN KXDO KXDQ KXDS KXDT KXDU KXDV KXDW KXDX KXDY KXEC KXED KXEE KXEF KXEJ KXEK KXEN KXEQ KXER KXET KXEV KXEY KXFA KXFD KXFF KXFH KXFI KXFJ KXFK KXFL KXFO KXFP KXFQ KXFS KXFU KXFV KXFW KXFY KXFZ KXGD KXGG KXGH KXGI KXGJ KXGK KXGP KXGQ KXGS KXGU KXGW KXGX KXGY KXGZ KXHA KXHB KXHC KXHD KXHE KXHF KXHG KXHH KXHJ KXHK KXHL KXHN KXHO KXHP KXHQ KXHR KXHS KXHU KXHV KXHW KXHX KXHY KXHZ KXIB KXID KXIE KXIF KXIG KXIH KXIJ KXIK KXIL KXIO KXIP KXIS KXIU KXIV KXIW KXIY KXIZ KXJA KXJC KXJD KXJE KXJF KXJG KXJH KXJI KXJL KXJP KXJQ KXJU KXJV KXJW KXJY KXKA KXKB KXKD KXKE KXKF KXKG KXKH KXKI KXKJ KXKN KXKO KXKP KXKV KXLD KXLJ KXLZ KXME KXMG KXMH KXMI KXMJ KXMK KXMM KXMN KXMQ KXMU KXMV KXMW KXMY KXND KXNF KXNH KXNI KXNJ KXNK KXNL KXNN KXNQ KXNR KXNS KXNX KXNY KXOA KXOB KXOC KXOD KXOE KXOG KXOH KXOM KXON KXOP KXOS KXOU KXOV KXOW KXOY KXOZ KXPC KXPF KXPG KXPH KXPJ KXPL KXPP KXPQ KXPS KXPU KXPV KXPW KXPX KXPY KXQA KXQB KXQC KXQD KXQE KXQF KXQG KXQH KXQI KXQK KXQL KXQM KXQN KXQO KXQP KXQR KXQS KXQU KXQV KXQW KXQY KXRH KXRL KXSD KXSG KXSI KXSJ KXSK KXSO KXSP KXSQ KXSV KXSX KXSY KXSZ KXTB KXTE KXTI KXTP KXTW KXTY KXUB KXUC KXUD KXUE KXUF KXUG KXUH KXUI KXUJ KXUK KXUM KXUO KXUP KXUQ KXUR KXUU KXUV KXUX KXUY KXUZ KXVC KXVD KXVE KXVF KXVG KXVH KXVJ KXVK KXVL KXVM KXVN KXVP KXVQ KXVS KXVT KXVW KXVY KXVZ KXWC KXWD KXWE KXWG KXWH KXWJ KXWK KXWL KXWM KXWN KXWO KXWP KXWQ KXWU KXWV KXWW KXWZ KXXA KXXB KXXC KXXD KXXG KXXH KXYA KXYB KXYD KXYE KXYF KXYG KXYH KXYI KXYJ KXYK KXYN KXYO KXYP KXYQ KXYR KXYS KXYT KXYU KXYV KXYW KXYX KXYY KXZA KXZB KXZC KXZD KXZE KXZF KXZG KXZH KXZI KXZJ KXZL KXZN KXZO KXZP KXZQ KXZR KXZS KXZU KXZV KXZW

← KW call signs All prefixes KY 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.