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Confidence: Medium · Source: FCC ULS · As of 2026-09-10

WP4TZO

Cancelled

OTERO-SANMIGUEL, ENRIQUE A

Location: Quebradillas, PR
Class: Technician
Granted: 2026-05-27
Expires: 2036-05-27
FRN: 0038333753

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Vanity availability

643d

Available on 2028-06-15

WP4TZO cancelled on 2026-06-16. Hold ends in 643 days.

Last held by OTERO-SANMIGUEL, ENRIQUE A (PR).

Confidence: High

Cancelled licenses begin the 2-year hold immediately on the cancellation date, so this is the firm release date per §97.19.

Callsign genealogy

Prior holders later became

KP4CAOactive· T
OTERO-SANMIGUEL, ENRIQUE APRgranted 2026-06-16

License history

0 events

No recorded events.

More vanity slots coming available

From Puerto Rico

K5DTC 2026-09-14
WP4LKC 2026-09-14
KP4ECD 2026-09-16
WP3TU 2026-09-16
WP3TX 2026-09-16

Starting with WP4

WP4LKC PR · 2026-09-14
WP4MRN UT · 2026-09-17
WP4TKL PR · 2026-09-17
WP4KNF PR · 2026-09-18
WP4JMU PR · 2026-09-21

Full history → Vanity availability → Callsign genealogy →