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

WP4TSN

Cancelled

Rios Perez, Oscar

Location: San Antonio, PR
Class: Technician
Granted: 2025-08-12
Expires: 2035-08-12
FRN: 0037158284

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Vanity availability

354d

Available on 2027-08-30

WP4TSN cancelled on 2025-08-30. Hold ends in 354 days.

Last held by Rios Perez, Oscar (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

KP4ORPactive· G
Rios Perez, OscarPRgranted 2025-08-30

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 →