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

KP4SU

Cancelled

Santiago 540, Roberto

Location: Leominster, MA
Class: Amateur Extra
Granted: 2011-08-11
Expires: 2021-10-29
Previous call: WP4JRB
FRN: 0004850657

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Vanity availability

Available

Available now

KP4SU cleared its 2-year hold on 2023-05-25. Eligible for vanity application.

Last held by Santiago 540, Roberto (MA).

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

WP4JRBactive· T
Burgos-Rivera, Jose RPRgranted 2025-06-26
WP4OLQcancelled· T
Burgos-Rivera, Jose RPRgranted 2011-09-28cancelled 2015-09-18

Prior holders later became

AC1LKactive· E
Santiago, RobertoFLgranted 2021-08-06

License history

0 events

No recorded events.

More vanity slots coming available

From Massachusetts

All →

K1AFR 2026-09-10
KC1SDV 2026-09-10
W1RLJ 2026-09-10
KB1ITH 2026-09-12
KB1YQO 2026-09-13

Starting with KP4

All →

KP4ECD PR · 2026-09-16
KP4ED PR · 2026-10-05
KP4CH IN · 2026-10-11
KP4DEU PR · 2026-10-12
KP4GN PR · 2026-11-02

Full history → Vanity availability → Callsign genealogy →