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

KO4AEX

Cancelled

Grundhoefer, John L

Location: Acworth, GA
Class: Amateur Extra
Granted: 2019-11-20
Expires: 2029-11-20
FRN: 0028962496

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Vanity availability

Available

Available now

KO4AEX cleared its 2-year hold on 2022-04-18. Eligible for vanity application.

Last held by Grundhoefer, John L (GA).

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

KV5IEcancelled· E
Grundhoefer, John LGAgranted 2020-04-18cancelled 2020-06-01

License history

0 events

No recorded events.

More vanity slots coming available

From Georgia

All →

KK4LOC 2026-09-11
KK4LOG 2026-09-11
KK4LOH 2026-09-11
KK4LOK 2026-09-11
KK4LOU 2026-09-13

Starting with KO4

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KO4UTL FL · 2026-09-13
KO4PTL KY · 2026-09-17
KO4OSB VA · 2026-09-21
KO4TMC FL · 2026-09-21
KO4YVJ FL · 2026-09-24

Full history → Vanity availability → Callsign genealogy →