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

WP4MO

Expired

PINEIRO, CARLOS A

Location: CIALES, PR
Class: Technician Plus
Granted: 1987-11-03
Expires: 1997-11-03

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Vanity availability

Available

Available now

WP4MO cleared its 2-year hold on 2025-06-01. Eligible for vanity application.

Last held by Ocasio, Angel M (PR).

Confidence: High

Cancelled licenses begin the 2-year hold immediately, so this date is the firm release date per §97.19. Already past — fileable subject to FCC verification.

Callsign genealogy

Full chain →

Previously held by current licensee

KK4AOZcancelled· G
Ocasio, Angel MPRgranted 2011-03-01cancelled 2011-03-22

Prior holders later became

KP4YMactive· E
Ocasio, Angel MGAgranted 2023-06-02

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 →