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

AJ4DU

Cancelled

Retzloff, Robin L

Location: Lakeland, FL
Class: Amateur Extra
Granted: 2007-07-02
Expires: 2017-07-02
Previous call: KI4WUP
FRN: 0016663353

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Vanity availability

Available

Available now

AJ4DU cleared its 2-year hold on 2009-12-26. Eligible for vanity application.

Last held by Retzloff, Robin L (FL).

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 →

Previously held by current licensee

KI4WUPcancelled· E
Retzloff, Robin LFLgranted 2007-07-02cancelled 2007-12-07

Prior holders later became

AF1REactive· E
Retzloff, Robin LMIgranted 2017-12-27

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

K4CYG 2026-09-10
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KG4RVV 2026-09-10
KG4VAB 2026-09-10

Starting with AJ4

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AJ4BA FL · 2027-05-31

Full history → Vanity availability → Callsign genealogy →