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

ARTURO OTERO-BRACERO

FRN 0014702740 · first licensed Feb 21, 2006 as WP4NRH · 2 licenses on record

📝 FCC applications (6)

Received	File number	Service	Purpose	Status	Call
May 26, 2026	0012047182	HAM	Renewal	Granted	KP4AOB
Jan 8, 2016	0007089974	HAM	Renewal	Granted	KP4AOB
Apr 16, 2013	0005740310	HAM	Administrative update	Granted	KP4AOB
Oct 26, 2009	0004007380	HAM	Modification	Granted	KP4AOB
Mar 20, 2006	0002532350	HAM	Modification	Granted	WP4NRH
Feb 21, 2006	0002492004	HAM	New license	Granted	WP4NRH

Complete licensing history

📦 Moved: San Juan, PR → Bayamon, PR

KP4AOB Active General · vanity Apr 7, 2006 → expires May 27, 2036

Licensee
ARTURO OTERO-BRACERO

Address
PO Box 3977
Bayamon, PR 00958

FRN
0014702740

Previous call
WP4NRH (Technician)

Last granted
May 27, 2026

Effective
May 27, 2026

Last action
May 27, 2026
FCC actions (6)
- May 27, 2026 — License renewed LIREN
- Jan 9, 2016 — License renewed LIREN
- Apr 17, 2013 — Administrative update LIAUA
- Oct 26, 2009 — License modified LIMOD
- Apr 7, 2006 — Vanity call sign granted VANGRT
- Apr 7, 2006 — License issued LIISS
WP4NRH Canceled Technician Feb 21, 2006 → Apr 7, 2006 (canceled)

Licensee
ARTURO OTERO-BRACERO

Address
PO Box 9022821
SAN JUAN, PR 00902

FRN
0014702740

Last granted
Feb 21, 2006

Effective
Feb 21, 2006

Last action
Apr 7, 2006
FCC actions (3)
- Apr 7, 2006 — License canceled LICAN
- Feb 21, 2006 — License issued LIISS
- Feb 21, 2006 — 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 Oct 22, 2013 → Oct 4, 2026 · 39 snapshots · as KP4AOB
ARTURO OTERO-BRACERO
PO Box 3977
Bayamon, PR 00958
Seen May 27, 2010 → Oct 4, 2026 · 55 snapshots · as WP4NRH
ARTURO OTERO-BRACERO
PO Box 9022821
SAN JUAN, PR 00902

Vanity applications

Filed · Award	Applicant	Requested (in order)	Status
Filed Mar 20, 2006 Granted May 27, 2026 0002532350	WP4NRH · ARTURO OTERO-BRACERO · Technician PO Box 9022821 · SAN JUAN, PR 00902	1.KP4AOB ✓ granted 2.KP4AO held by ARECIBO OBSERVATORY RADIO CLUB until Feb 28, 2027 3.KP4TL held by ORLANDO MORALES until Jan 4, 2027 4.KP4A held by BELARMINO ALVAREZ until Mar 20, 2028	Granted got KP4AOB