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

W4LUF

Active

USIN FREIRE, LEONIDES

Location: MIAMI, FL
Class: Amateur Extra
Granted: 2020-03-17
Expires: 2030-03-17
Previous call: KO4CFD
FRN: 0029272382

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Vanity availability

Held

Currently held

W4LUF is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

KO4CFDcancelled· G
USIN FREIRE, LEONIDESFLgranted 2020-02-27cancelled 2020-03-17

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

KD4SPY 2026-09-11
KK4LOA 2026-09-11
KB1HYE 2026-09-12
KO4UTL 2026-09-13
KQ4RHZ 2026-09-13

Starting with W4

All →

W4CVH VA · 2026-09-12
W4QDZ NC · 2026-09-13
W4CKI AL · 2026-09-17
W4UKX SC · 2026-09-17
W4BRN AL · 2026-09-20

Full history → Vanity availability → Callsign genealogy →