CFCallsignFinder

Search Watchlist

Track FCC amateur radio vanity callsign availability. Data updated daily.

Legal & Info

Pricing FAQ Terms of Service Privacy Policy

© 2026 CallsignFinder. All rights reserved.

FCC data sourced from FCC Universal Licensing System. Not affiliated with the FCC.

Watchlist Search Account

Home/Search/AB1O

← Back to results

AB1O

Active2x1District 1

Competitive callsign — 2 applications filed with the FCC.

License HolderSCHROEDER, STANLEY R

License ClassGeneral

Min. Class RequiredAmateur Extra

LocationCrestline, CA

Grant DateApr 5, 2022

Expiration DateApr 5, 2032

AB1O is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by SCHROEDER, STANLEY R in Crestline, CA. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by Locke, Jeffery K on Nov 17, 2011. AB1O has 9 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 32 units(Moderate)

Voice Phonetics

Alpha Bravo One Oscar

Readability: 8.5/10(High readability)

License History

Administrative Update AppliedSep 1, 2023
License RenewedApr 5, 2022
Administrative Update AppliedFeb 4, 2021
License IssuedDec 6, 2011
Vanity Callsign GrantedDec 6, 2011
Internal Correction AppliedOct 5, 2011
Internal Correction AppliedOct 5, 2011
License RenewedAug 22, 2001
Tax ID (TIN) AddedAug 22, 2001

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Locke, Jeffery KFiled Nov 17, 2011
Not awardedFCC ↗
GILMORE, DONALD DFiled Apr 26, 2011
DismissedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← AB1N AB1P →

FCC data as of Sep 3, 2026

AB1O FCC Vanity Status: 2 Competing Applications & History