N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 2026) · next update today 9:45 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

KB1TUA HAM

✅ Available for a vanity request — free since May 22, 2012.

2x3 call: any licensee can request it. No pending applications list it.

📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH

Not currently held · 1 holder on record · available since May 22, 2012

Previous holder: Enrique (Carlos) Ruiz

Held KB1TUA Mar 2, 2010 → May 21, 2010 · first licensed Mar 2, 2010 as KB1TUA · 10 licenses · FRN 0019598093

📦 Moved: Springfield, MA → San Juan, PR

KP4R Active Amateur Extra · vanity Oct 17, 2013 → expires Oct 17, 2033

Licensee
Enrique (Carlos) Ruiz

Address
352 AVENIDA SAN CLAUDIO PMB 316
SAN JUAN, PR 00926
18.3790, -66.0528 (street) · Grid FK68xj · CQ 8 · ITU 11 · map ↗

FRN
0019598093

Previous call
KP4EC (General)

Last granted
Sep 26, 2023

Effective
Sep 26, 2023

Last action
May 20, 2025
FCC actions (8)
- Sep 26, 2023 — License renewed LIREN
- May 20, 2021 — Administrative update LIAUA
- May 18, 2021 — Administrative update LIAUA
- Mar 27, 2020 — Administrative update LIAUA
- Dec 2, 2017 — Administrative update LIAUA
- Oct 18, 2013 — Administrative update LIAUA
- Oct 17, 2013 — Vanity call sign granted VANGRT
- Oct 17, 2013 — License issued LIISS
KP4EC Canceled Amateur Extra · vanity Jun 29, 2013 → Oct 17, 2013 (canceled)

Licensee
Enrique (Carlos) Ruiz

Address
PO Box 81342
Springfield, MA 01138

FRN
0019598093

Previous call
W1GO (General)

Last granted
Jun 29, 2013

Effective
Jun 29, 2013

Last action
Jun 6, 2025
FCC actions (3)
- Oct 17, 2013 — License canceled LICAN
- Jun 29, 2013 — Vanity call sign granted VANGRT
- Jun 29, 2013 — License issued LIISS
W1GO Canceled Amateur Extra · vanity May 10, 2013 → Jun 29, 2013 (canceled)

Licensee
Enrique (Carlos) Ruiz

Address
PO Box 81342
Springfield, MA 01138

FRN
0019598093

Previous call
KP4EC (General)

Last granted
May 10, 2013

Effective
May 10, 2013

Last action
Jun 19, 2025
FCC actions (3)
- Jun 29, 2013 — License canceled LICAN
- May 10, 2013 — Vanity call sign granted VANGRT
- May 10, 2013 — License issued LIISS
W1GO Terminated Amateur Extra · vanity Apr 13, 2013 → Apr 15, 2013

Licensee
Enrique (Carlos) Ruiz

Address
PO Box 81342
Springfield, MA 01138

FRN
0019598093

Previous call
KP4EC (General)

Last granted
Apr 13, 2013

Effective
Apr 13, 2013

Last action
Jun 19, 2025
FCC actions (3)
- Apr 15, 2013 — License terminated LITERM
- Apr 13, 2013 — Vanity call sign granted VANGRT
- Apr 13, 2013 — License issued LIISS
📦 Moved: Caguas, PR → Springfield, MA

KP4EC Canceled Amateur Extra · vanity Jul 14, 2012 → May 10, 2013 (canceled)

Licensee
Enrique (Carlos) Ruiz

Address
PO Box 81342
Springfield, MA 01138

FRN
0019598093

Previous call
KF1O (General)

Last granted
Jul 14, 2012

Effective
Jul 17, 2012

Last action
Jun 6, 2025
FCC actions (7)
- May 10, 2013 — License canceled LICAN
- Apr 15, 2013 — Record corrected COR
- Apr 15, 2013 — Record corrected COR
- Apr 13, 2013 — License canceled LICAN
- Jul 17, 2012 — Administrative update LIAUA
- Jul 14, 2012 — Vanity call sign granted VANGRT
- Jul 14, 2012 — License issued LIISS
📦 Moved: Springfield, MA → Caguas, PR

KF1O Canceled Amateur Extra · vanity Jun 8, 2012 → Jul 14, 2012 (canceled)

Licensee
Enrique (Carlos) Ruiz

Address
PO Box 1615
Caguas, PR 00725
18.2207, -66.0396 (ZIP center) · Grid FK68xf · CQ 8 · ITU 11 · map ↗

FRN
0019598093

Previous call
KP4EC (General)

Last granted
Jun 8, 2012

Effective
Jun 26, 2012

Last action
May 13, 2020
FCC actions (4)
- Jul 14, 2012 — License canceled LICAN
- Jun 26, 2012 — Administrative update LIAUA
- Jun 8, 2012 — Vanity call sign granted VANGRT
- Jun 8, 2012 — License issued LIISS
📦 Moved: Caguas, PR → Springfield, MA

KP4EC Canceled Amateur Extra · vanity Dec 17, 2011 → Jun 8, 2012 (canceled)

Licensee
Enrique (Carlos) Ruiz

Address
PO Box 81342
Springfield, MA 01138

FRN
0019598093

Previous call
KP4FCC (General)

Last granted
Dec 17, 2011

Effective
Dec 31, 2011

Last action
Jun 6, 2025
FCC actions (4)
- Jun 8, 2012 — License canceled LICAN
- Dec 31, 2011 — Administrative update LIAUA
- Dec 17, 2011 — Vanity call sign granted VANGRT
- Dec 17, 2011 — License issued LIISS
KP4FCC Canceled Amateur Extra · vanity Nov 8, 2011 → Dec 17, 2011 (canceled)

Licensee
Enrique (Carlos) Ruiz

Address
PO Box 1615
Caguas, PR 00625

FRN
0019598093

Previous call
KP4EC (General)

Last granted
Nov 8, 2011

Effective
Nov 30, 2011

Last action
Dec 17, 2011
FCC actions (4)
- Dec 17, 2011 — License canceled LICAN
- Nov 30, 2011 — Administrative update LIAUA
- Nov 8, 2011 — Vanity call sign granted VANGRT
- Nov 8, 2011 — License issued LIISS
KP4EC Canceled Amateur Extra · vanity May 21, 2010 → Nov 8, 2011 (canceled)

Licensee
Enrique (Carlos) Ruiz

Address
PO Box 1615
Caguas, PR 00625

FRN
0019598093

Previous call
KB1TUA (General)

Last granted
May 21, 2010

Effective
Jun 9, 2011

Last action
Jun 6, 2025
FCC actions (7)
- Nov 8, 2011 — License canceled LICAN
- Jun 9, 2011 — Administrative update LIAUA
- Oct 5, 2010 — Administrative update LIAUA
- Aug 3, 2010 — Administrative update LIAUA
- May 22, 2010 — Administrative update LIAUA
- May 21, 2010 — Vanity call sign granted VANGRT
- May 21, 2010 — License issued LIISS
KB1TUA Canceled Amateur Extra Mar 2, 2010 → May 21, 2010 (canceled)

Licensee
Enrique C Ruiz

Address
PO Box 1615
Caguas, PR 00726

FRN
0019598093

Last granted
Mar 2, 2010

Effective
May 1, 2010

Last action
May 21, 2010
FCC actions (5)
- May 21, 2010 — License canceled LICAN
- May 1, 2010 — Administrative update LIAUA
- Mar 15, 2010 — License modified LIMOD
- Mar 2, 2010 — License issued LIISS
- Mar 2, 2010 — 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 Apr 16, 2022 → Oct 4, 2026 · 13 snapshots · as KP4R
Enrique (Carlos) Ruiz
352 AVENIDA SAN CLAUDIO PMB 316, SAN JUAN, PR 00926
18.3790, -66.0528 (street) · Grid FK68xj · CQ 8 · ITU 11 · map ↗
Seen Jul 26, 2012 → Oct 4, 2026 · 43 snapshots · as KF1O
Enrique (Carlos) Ruiz
PO Box 1615
Caguas, PR 00725
18.2207, -66.0396 (ZIP center) · Grid FK68xf · CQ 8 · ITU 11 · map ↗
Seen May 28, 2012 → Oct 4, 2026 · 225 snapshots · as KP4EC
Enrique (Carlos) Ruiz
PO Box 81342
Springfield, MA 01138
Seen Oct 17, 2011 → Oct 4, 2026 · 90 snapshots · as KP4EC
Enrique (Carlos) Ruiz
PO Box 1615
Caguas, PR 00625
Seen May 27, 2010 → Oct 4, 2026 · 47 snapshots · as KB1TUA
Enrique C Ruiz
PO Box 1615
Caguas, PR 00726
Seen Jan 2, 2018 → May 6, 2019 · 5 snapshots · as KP4R
Enrique (Carlos) Ruiz
PO Box 6162
Springfield, MA 01101
Seen May 27, 2010 · 1 snapshot · as KP4EC
Enrique C Ruiz
PO Box 81342
Springfield, MA 01138

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KB1TUA in the last 24 hours. They show up here within seconds of KB1TUA beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.