Confidence: Medium · Source: FCC ULS · As of 2026-09-11

KK4SIN

Cancelled

Mullen, Austin J

Location: Ozark, AL
Class: Technician
Granted: 2013-06-28
Expires: 2023-06-28
FRN: 0022807952

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Vanity availability

Available

Available now

KK4SIN cleared its 2-year hold on 2016-06-02. Eligible for vanity application.

Last held by Mullen, Austin J (AL).

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

WX4AJMactive· T
Mullen, Austin JALgranted 2024-05-14

License history

0 events

No recorded events.

More vanity slots coming available

From Alabama

All →

KG4VBC 2026-09-11
KG4VBD 2026-09-11
KK4LOB 2026-09-11
KG4VBM 2026-09-12
AB4LC 2026-09-14

Starting with KK4

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KK4LNP TN · 2026-09-11
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KK4LNV TN · 2026-09-11
KK4LOA FL · 2026-09-11

Full history → Vanity availability → Callsign genealogy →