N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 5, 2026) · next update tomorrow 6:00 am CDT

Ask: HAMs within 5 miles of N9TPB · Extra class operators in Madison, WI · or try N9TPB · K9* wildcards · Smith, John · 0004797601 (FRN) · 53703 · Madison, WI

ROBERT RUIZ RIVERA

FRN 0034083139 · first licensed Aug 22, 2023 as WP4SYP · 2 licenses on record

📝 FCC applications (5)

Received	File number	Service	Purpose	Status	Call
Apr 28, 2025	0011544396	HAM	Administrative update	Granted	KP4RRR
Apr 24, 2025	0011542701	HAM	Administrative update	Granted	KP4RRR
Jul 15, 2024	0011156818	HAM	Modification	Granted	KP4RRR
Aug 22, 2023	0010667360	HAM	Modification	Granted	WP4SYP
Aug 21, 2023	0010663252	HAM	New license	Granted	WP4SYP

Complete licensing history

📦 Moved: San Juan, PR → Cayey, PR

KP4RRR Active General · vanity Sep 9, 2023 → expires Sep 9, 2033

Licensee
ROBERT RUIZ RIVERA

Address
PO BOX 370104
CAYEY, PR 00737

FRN
0034083139

Previous call
WP4SYP (Technician)

Last granted
Sep 9, 2023

Effective
Apr 29, 2025

Last action
Apr 29, 2025
FCC actions (5)
- Apr 29, 2025 — Administrative update LIAUA
- Apr 25, 2025 — Administrative update LIAUA
- Jul 15, 2024 — License modified LIMOD
- Sep 9, 2023 — Vanity call sign granted VANGRT
- Sep 9, 2023 — License issued LIISS
WP4SYP Canceled Technician Aug 22, 2023 → Sep 9, 2023 (canceled)

Licensee
ROBERT RUIZ RIVERA

Address
PO BOX 20021
SAN JUAN, PR 00928

FRN
0034083139

Last granted
Aug 22, 2023

Effective
Aug 22, 2023

Last action
Sep 9, 2023
FCC actions (3)
- Sep 9, 2023 — License canceled LICAN
- Aug 22, 2023 — License issued LIISS
- Aug 22, 2023 — Systematic call sign granted SYSGRT

Address history

From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.

Seen May 29, 2025 → Oct 4, 2026 · 4 snapshots · as KP4RRR
ROBERT RUIZ RIVERA
PO BOX 370104, CAYEY, PR 00737
Seen Apr 27, 2024 → Oct 4, 2026 · 14 snapshots · as WP4SYP
ROBERT RUIZ RIVERA
PO BOX 20021, SAN JUAN, PR 00928
Seen Sep 27, 2024 → Apr 25, 2025 · 6 snapshots · as KP4RRR
ROBERTO RUIZ-RIVERA
PO BOX 20021, SAN JUAN, PR 00928

Vanity applications

Filed · Award	Applicant	Requested (in order)	Status
Filed Aug 22, 2023 Granted Sep 9, 2023 0010667360	WP4SYP · ROBERT RUIZ RIVERA · Technician PO BOX 20021, SAN JUAN, PR 00928	1.KP4RRR ✓ granted	Granted got KP4RRR