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

WP4O

Active

OTERO, PEDRO J

Location: BAYAMON, PR
Class: Amateur Extra
Granted: 2026-02-21
Expires: 2036-05-13
Previous call: KP4TC
FRN: 0001832864

Get notified about status changes and vanity availability for this callsign.

Vanity availability

Held

Currently held

WP4O 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

KP4TCactive· E
CORTES RIVERA, JUAN APRgranted 2025-06-27
WP4JCRcancelled· E
CORTES RIVERA, JUAN APRgranted 2023-09-09cancelled 2025-06-27
WP4QHXcancelled· G
CORTES RIVERA, JUAN APRgranted 2018-08-20cancelled 2023-09-09

Prior holders later became

KK4Xactive· E
RODRIGUEZ, EdFLgranted 2024-01-25
KE4IAcancelled· E
Rodriguez, Edwin (ED)FLgranted 2012-08-07cancelled 2012-09-11

License history

0 events

No recorded events.

More vanity slots coming available

From Puerto Rico

All →

WP4TLD 2026-09-10
K5DTC 2026-09-14
WP4LKC 2026-09-14
KP4ECD 2026-09-16
WP3TU 2026-09-16

Starting with WP4

All →

WP4TLD PR · 2026-09-10
WP4LKC PR · 2026-09-14
WP4MRN UT · 2026-09-17
WP4TKL PR · 2026-09-17
WP4KNF PR · 2026-09-18

Full history → Vanity availability → Callsign genealogy →