AD0A
Active2x1District 0
Competitive callsign — 5 applications filed with the FCC.
License HolderKoelling, Terry L
License ClassAmateur Extra
Min. Class RequiredAmateur Extra
LocationArvada, CO
Grant DateApr 26, 2025
Expiration DateApr 26, 2035
AD0A is a highly sought-after 2x1 format amateur radio callsign. The license is currently held by Koelling, Terry L in Arvada, CO. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by Koelling, Terry L on Apr 8, 2025. AD0A has 16 recorded FCC license history events.
CW & Voice Analysis
Morse Code
.- -.. ----- .-
CW Weight: 28 units(Light (fast to send))
Voice Phonetics
Alpha Delta Zero Alpha
Readability: 8/10(High readability)
License History
- License IssuedApr 26, 2025
- Vanity Callsign GrantedApr 26, 2025
- License CanceledJun 15, 2024
- Vanity Callsign GrantedMay 17, 2024
- License IssuedMay 17, 2024
- Internal Correction AppliedMar 29, 2024
- Internal Correction AppliedMar 29, 2024
- Administrative Update AppliedDec 12, 2017
- Administrative Update AppliedAug 25, 2015
- Administrative Update AppliedAug 18, 2015
- License RenewedJan 18, 2014
- Administrative Update Applied
Vanity Application Activity
Competing applications filed with the FCC for this callsign.