Confidence: Medium · Source: FCC ULS · As of 2026-09-10

AA0AO

Active

GIEROK, THOMAS A

Location: WINONA, MN
Class: Amateur Extra
Granted: 2017-04-21
Expires: 2027-04-21
Previous call: AB0TG
FRN: 0023186505

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Vanity availability

Held

Currently held

AA0AO is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

AB0TGcancelled· E
GIEROK, THOMAS AMNgranted 2014-05-16cancelled 2017-04-21
KD0YMEcancelled· E
GIEROK, THOMAS AMNgranted 2013-12-12cancelled 2014-05-16

Prior holders later became

K7PTLactive· E
RAFFERTY, MICHAEL GMTgranted 2022-01-05

License history

0 events

No recorded events.

More vanity slots coming available

From Minnesota

All →

AB0UX 2026-09-10
KD0TBF 2026-09-10
KD5TUA 2026-09-11
N0SRJ 2026-09-14
KC0OBE 2026-09-15

Starting with AA0

All →

AA0KH MO · 2026-09-28
AA0UX KS · 2026-09-28
AA0KL CO · 2026-10-12
AA0KN MI · 2026-10-26
AA0DP KS · 2026-11-02

Full history → Vanity availability → Callsign genealogy →