Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KU4SI

Expired

DIAZ, ANTONIO F

Location: MIAMI, FL
Class: Advanced
Granted: 2008-03-26
Expires: 2018-05-22
Previous call: KA4BGU
FRN: 0017597782

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Vanity availability

Available

Available now

KU4SI cleared its 2-year hold on 2022-05-21. Eligible for vanity application.

Last held by DIAZ, ANTONIO F (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

KA4BGUcancelled
cancelled 1998-05-22

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

AC4VP 2026-09-14
KB2AID 2026-09-14
KD4SXH 2026-09-14
KD4SXQ 2026-09-14
KE4EYE 2026-09-14

Starting with KU4

All →

KU4QM KY · 2026-10-19
KU4Y NY · 2027-01-17
KU4QL FL · 2027-01-18
KU4X AL · 2027-03-11
KU4FE AL · 2027-03-22

Full history → Vanity availability → Callsign genealogy →