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

AI4PO

Cancelled

Henderson Jr, John H

Location: Rockledge, FL
Class: Amateur Extra
Granted: 2002-08-13
Expires: 2012-10-27
Previous call: N4SMX
FRN: 0005407002

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Vanity availability

Available

Available now

AI4PO cleared its 2-year hold on 2008-08-24. Eligible for vanity application.

Last held by Henderson Jr, John H (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

N4SMXcancelled· E
Henderson Jr, John HFLgranted 2002-08-13cancelled 2006-05-12

Prior holders later became

AI4REactive· E
Henderson Jr, John HFLgranted 2024-04-02

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

K4HCL 2026-09-09
KG4UZU 2026-09-09
KG4UZX 2026-09-09
KK4LMR 2026-09-09
W3EFZ 2026-09-09

Starting with AI4

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AI4LB FL · 2026-09-18
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AI4ES KY · 2026-12-31

Full history → Vanity availability → Callsign genealogy →