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

KM4SDK

Cancelled

BARROS VILLAHERMOSA, CARLOS

Location: FORT BUCHANAN, PR
Class: Amateur Extra
Granted: 2016-03-10
Expires: 2026-03-10
FRN: 0022501282

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Vanity availability

Available

Available now

KM4SDK cleared its 2-year hold on 2023-02-27. Eligible for vanity application.

Last held by BARROS VILLAHERMOSA, CARLOS (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 →

Prior holders later became

W4DIAactive· E
BARROS VILLAHERMOSA, CARLOSPRgranted 2021-02-27

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 KM4

All →

KM4AHK PA · 2026-09-21
KM4JCT GA · 2026-09-28
KM4FBY SC · 2026-10-01
KM4IS NC · 2026-10-03
KM4NGF AL · 2026-10-07

Full history → Vanity availability → Callsign genealogy →