Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KB4OZ

Expired

Rivera, Osvaldo

Location: Spring Hill, FL
Class: Amateur Extra
Granted: 2008-02-15
Expires: 2018-02-15
Previous call: AJ4EP
FRN: 0004895801

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Vanity availability

Available

Available now

KB4OZ cleared its 2-year hold on 2022-02-14. Eligible for vanity application.

Last held by Rivera, Osvaldo (FL).

Confidence: High

Expired licenses get a 2-year FCC renewal grace period followed by the 2-year hold. The date shown accounts for both, so it's the firm release date per §97.19.

Callsign genealogy

Full chain →

Previously held by current licensee

AJ4EPcancelled· E
Rivera, OsvaldoFLgranted 2002-07-16cancelled 2008-02-15
KP4LEUcancelled· E
Rivera, OsvaldoFLgranted 2002-07-16cancelled 2008-01-23
WP3KScancelled· G
Rivera-Soto, OsvaldoPRgranted 2001-05-02cancelled 2002-07-16

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

KO4UTL 2026-09-13
KQ4RHZ 2026-09-13
KQ4UWU 2026-09-13
KQ4UXF 2026-09-13
N1SSL 2026-09-13

Starting with KB4

All →

KB4IIB TN · 2026-09-14
KB4CON KY · 2026-09-21
KB4OXL IL · 2026-10-02
KB4CO TN · 2026-10-04
KB4XQ AL · 2026-10-05

Full history → Vanity availability → Callsign genealogy →