WP4NB

WP4NB is restricted to amateurs with a USPS address in Puerto Rico

WP4NB is restricted to Technician class operators or higher.

WP4NB is c - canceled 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
None	I - Individual		– /	C - Canceled		—	1997-07-31

WP4NB is restricted to amateurs with a USPS address in Puerto Rico

WP4NB is restricted to Technician class operators or higher.

WP4NB is c - canceled 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Two dates or purposes in one row mean the application was amended or withdrawn: the latest change is on top, the original underneath.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
Mon 2025-05-19	KQ4TRA	4 / FL	FRONEK, BRIAN F	0011573699 I - Online	MD - Modification	2025-05-19	2025-06-06	G - Granted
Thu 1999-11-04	WP4IOC	6 / CA	MARRERO, MILTON B	0000044312 I - Online	MD - Modification	(none)	1999-11-23	D - Dismissed