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W5ZIO

Active1x3District 5

Competitive callsign — 4 applications filed with the FCC.

License HolderWalker, William U

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationTucson, AZ

Grant DateDec 21, 2018

Expiration DateDec 21, 2028

W5ZIO is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Walker, William U in Tucson, AZ. This callsign has attracted significant interest in the amateur radio community, with 4 vanity applications filed with the FCC. The most recent was submitted by URBACH, THEODORE R on Apr 21, 2008. W5ZIO has 6 recorded FCC license history events.

CW & Voice Analysis

Morse Code

.-- ..... --.. .. ---

CW Weight: 31 units(Moderate)

Voice Phonetics

Whiskey Five Zulu India Oscar

Readability: 7.5/10(High readability)

License History

License RenewedDec 21, 2018
License IssuedMay 9, 2008
Vanity Callsign GrantedMay 9, 2008
License ExpiredNov 29, 2007
Administrative Update AppliedDec 5, 2001
Administrative Update AppliedDec 27, 2000

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

URBACH, THEODORE RFiled Apr 21, 2008
Not awardedFCC ↗
Walker, William UFiled Apr 21, 2008
Not awardedFCC ↗
BENNETT, DOUGLAS RFiled Jun 4, 2007
DismissedFCC ↗
Walker, William UFiled Jun 4, 2007

Search external databases

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FCC data as of Sep 3, 2026

Dismissed

W5ZIO FCC Vanity Status: 4 Competing Applications & History