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

WP4SZY

Cancelled

MARCIAL PEREZ, GRISEL

Location: UTUADO, PR
Class: Technician
Granted: 2023-10-11
Expires: 2033-10-11
FRN: 0033628843

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Vanity availability

637d

Available on 2028-06-08

WP4SZY cancelled on 2026-06-09. Hold ends in 637 days.

Last held by MARCIAL PEREZ, GRISEL (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

KP4GMPactive· T
MARCIAL PEREZ, GRISELPRgranted 2026-06-09

License history

0 events

No recorded events.

More vanity slots coming available

From Puerto Rico

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

Starting with WP4

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 →