Home/Search/AD0DU

AD0DU

Available2x2District 0

No competing applications on record.

License HolderSchafer, Scott R

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationBoulder, CO

Grant DateApr 29, 2013

Expiration DateApr 29, 2023

Cancellation DateApr 30, 2025

CallsignFinder

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

Legal & Info

Pricing FAQ Terms of Service Privacy Policy

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

Watchlist Search Account

Home/Search/AD0DU

← Back to results

AD0DU

Available2x2District 0

No competing applications on record.

License HolderSchafer, Scott R

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationBoulder, CO

Grant DateApr 29, 2013

Expiration DateApr 29, 2023

Cancellation DateApr 30, 2025

Available for ApplicationsApr 30, 2025

AD0DU is a 2x2 format amateur radio callsign. It is currently registered to Schafer, Scott R in Boulder, CO. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.

CW & Voice Analysis

Morse Code

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

CW Weight: 34 units(Moderate)

Voice Phonetics

Alpha Delta Zero Delta Uniform

Readability: 7/10(Good readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (2x2).

License History

License ExpiredApr 30, 2025
System-Generated GrantApr 29, 2013
License IssuedApr 29, 2013

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

No competing applications on record. Verify on the FCC ULS application search before filing.

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← AD0DT AD0DV →

FCC data as of Jul 29, 2026

Is AD0DU Available? FCC Vanity Status & Watchlist