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

KP4CH

Expired

MARTINEZ, JUAN C

Location: AQUADILLA, PR
Class: Amateur Extra
Granted: 1998-04-21
Expires: 2008-04-21
FRN: 0001858703

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Vanity availability

31d

Available on 2026-10-11

KP4CH cancelled on 2024-10-11. Hold ends in 31 days.

Last held by SERRANO, JOSE L (IN).

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

Previously held by current licensee

WP4KLcancelled· E
SERRANO ROSA, JOSE LPRgranted 2012-11-10cancelled 2013-05-21
NP3JPcancelled· G
SERRANO ROSA, JOSE LPRgranted 2005-01-25cancelled 2012-11-10
WP4MWH
no FCC ULS record on file

Prior holders later became

W9OTactive· E
SERRANO, JOSE LINgranted 2024-10-11

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 KP4

KP4ECD PR · 2026-09-16
KP4ED PR · 2026-10-05
KP4DEU PR · 2026-10-12
KP4GN PR · 2026-11-02
KP4ZS PR · 2026-11-16

Full history → Vanity availability → Callsign genealogy →