Confidence: Medium · Source: FCC ULS · As of 2026-09-09

AC0DU

Cancelled

O'Farrell, David J

Location: Estes Park, CO
Class: Amateur Extra
Granted: 2006-01-09
Expires: 2016-01-09
FRN: 0014405898

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Vanity availability

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Available now

AC0DU cleared its 2-year hold on 2008-01-27. Eligible for vanity application.

Last held by O'Farrell, David J (CO).

Confidence: High

Cancelled licenses begin the 2-year hold immediately, so this date is the firm release date per §97.19. Already past — fileable subject to FCC verification.

Callsign genealogy

Full chain →

Prior holders later became

WB0IXVactive· E
O'Farrell, David JCOgranted 2025-12-02

License history

0 events

No recorded events.

More vanity slots coming available

From Colorado

All →

KB7PWB 2026-09-10
KF0RME 2026-09-10
KD0TBG 2026-09-11
KD0TBU 2026-09-11
KD0TBW 2026-09-11

Starting with AC0

All →

AC0GJ CO · 2026-10-26
AC0DE WA · 2027-01-17
AC0JC MN · 2027-03-14
AC0HT CO · 2027-12-09
AC0JM CO · 2027-12-12

Full history → Vanity availability → Callsign genealogy →