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

N4TDH

Expired

HERRERA, GUILLERMO C

Location: MIAMI, FL
Class: Technician Plus
Granted: 1988-06-14
Expires: 1998-06-14
Previous call: KC4EWS

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Vanity availability

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N4TDH cleared its 2-year hold on 2002-06-13. Eligible for vanity application.

Last held by HERRERA, GUILLERMO C (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

KC4EWS
no FCC ULS record on file

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 N4

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Full history → Vanity availability → Callsign genealogy →