KP4NJ

KP4NJ is restricted to amateurs with a USPS address in Puerto Rico

KP4NJ is restricted to Technician class operators or higher.

KP4NJ is e - expired and is available.

Scroll down to the applications that requested this callsign.
An Entity Name opens everything filed under that licensee’s FCC Registration Number.
A Grant Date opens all processing on that day; an Effective Date opens the license record.

Column headings link to an explanation of the column.
A bold Applicant Type marks a vanity callsign assignment.
Active licenses are listed first, then the rest by Effective Date, newest first.

Entity Name	Applicant Type	Licensee Class	Region / State	License Status	Grant Date	Effective Date	Cancel Date	Expire Date
ALONSO DIAZ, MIGUEL E	I - Individual	A - Advanced	12 / PR	E - Expired	1992-07-21	1992-07-21	2004-07-22	2002-07-21

KP4NJ is restricted to amateurs with a USPS address in Puerto Rico

KP4NJ is restricted to Technician class operators or higher.

KP4NJ is e - expired and is available.

An Applicant callsign opens that callsign’s history; an Entity Name opens the applicant’s history.
A ULS File Number opens the application detail; a Receipt Date opens that day’s applications.

Two dates or purposes in one row mean the application was amended or withdrawn: the latest change is on top, the original underneath.
“Granted” means the application was granted, not necessarily with this callsign.
Receipt dates more than a month old have a gray background.

Receipt Date	Applicant Callsign	Region / State	Entity Name	ULS File Number	Application Purpose	Payment Date	Last Action Date	Application Status
Fri 2025-11-28	WP4TMF	12 / PR	Santiago-Vargas, Alex D	0011803169 I - Online	MD - Modification	2025-12-01	2025-12-16	D - Dismissed
Tue 2021-05-18	KN4NAR	12 / PR	Duprey Medina, Jacquelyn	0009557199 I - Online	MD - Modification	(none)	2021-06-07	D - Dismissed
Thu 2021-03-25	KN4NAR	12 / PR	Duprey Medina, Jacquelyn	0009468773 I - Online	MD - Modification	(none)	2021-04-13	D - Dismissed
Thu 2021-01-07	KN4NAR	12 / PR	Duprey Medina, Jacquelyn	0009358065 I - Online	MD - Modification	(none)	2021-01-26	D - Dismissed
Mon 2012-07-23	KP4MZU	12 / PR	RODRIGUEZ TORRES, JOSE A	0005327987 M - Manual	MD - Modification	2012-07-27	2012-08-10	D - Dismissed
Fri 2006-07-28	KP4VIC	12 / PR	SEVILLA, WILFREDO	0002694860 I - Online	AM - Amendment	2006-07-28	2006-08-15	D - Dismissed