KP4LT

KP4LT is restricted to amateurs with a USPS address in Puerto Rico

KP4LT is restricted to Technician class operators or higher.

KP4LT 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
RAMIREZ, LUIS A	I - Individual	A - Advanced	12 / PR	E - Expired	2005-06-23	2005-06-23	2017-07-06	2015-07-05

KP4LT is restricted to amateurs with a USPS address in Puerto Rico

KP4LT is restricted to Technician class operators or higher.

KP4LT 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Two dates or purposes in one row mean the application was amended or withdrawn: the latest change is on top, the original underneath.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
Wed 2025-07-02	WP4TSB	12 / PR	Toro Ortiz, Luis R	0011632236 I - Online	MD - Modification	(none)	2025-07-22	D - Dismissed
Fri 2025-05-30	WP4SWG	12 / PR	TRILLA FLORES, LIONEL	0011590097 I - Online	MD - Modification	2025-06-05	2025-06-17	G - Granted
Thu 2023-07-20	WP4SWZ	12 / PR	TORRES ZAYAS, LUIS A	0010626039 I - Online	MD - Modification	2023-07-21	2023-08-08	G - Granted