N9TPB FCC License Search

🕒 FCC license data updated yesterday 9:45 am CDT · next update today 7:15 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

AC4US HAM

✅ Available for a vanity request — free since Feb 6, 2021.

2x2 call: only Amateur Extra licensees can request it. No pending applications list it.

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

Not currently held · 2 holders on record · available since Feb 6, 2021

Previous holder: O GORDON WILLIAMSON JR

Held AC4US Jul 6, 2018 → Feb 5, 2019 · first licensed Sep 5, 1996 as W4WE · 22 licenses · FRN 0031900301

K4FL Active Amateur Extra · vanity Aug 22, 2023 → expires Aug 22, 2033

Licensee
O GORDON WILLIAMSON JR

Address
Attn: O Gordon Williamson
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
W4GX (Advanced)

Last granted
Aug 22, 2023

Effective
Aug 22, 2023

Last action
Aug 22, 2023
FCC actions (2)
- Aug 22, 2023 — Vanity call sign granted VANGRT
- Aug 22, 2023 — License issued LIISS
W4GX Canceled Amateur Extra · vanity Oct 11, 2019 → Aug 22, 2023 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
Attn: O Gordon Williamson
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
N3KW (Advanced)

Last granted
Oct 11, 2019

Effective
Oct 11, 2019

Last action
Aug 22, 2023
FCC actions (3)
- Aug 22, 2023 — License canceled LICAN
- Oct 11, 2019 — Vanity call sign granted VANGRT
- Oct 11, 2019 — License issued LIISS
N3KW Canceled Amateur Extra · vanity Feb 5, 2019 → Oct 11, 2019 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
Attn: O Gordon Williamson
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
AC4US (Advanced)

Last granted
Feb 5, 2019

Effective
Feb 5, 2019

Last action
Oct 11, 2019
FCC actions (3)
- Oct 11, 2019 — License canceled LICAN
- Feb 5, 2019 — Vanity call sign granted VANGRT
- Feb 5, 2019 — License issued LIISS
AC4US Canceled Amateur Extra · vanity Jul 6, 2018 → Feb 5, 2019 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
Attn: O Gordon Williamson
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
W3LD (Advanced)

Last granted
Jul 6, 2018

Effective
Jul 6, 2018

Last action
Feb 5, 2019
FCC actions (3)
- Feb 5, 2019 — License canceled LICAN
- Jul 6, 2018 — Vanity call sign granted VANGRT
- Jul 6, 2018 — License issued LIISS
W3LD Canceled Amateur Extra · vanity May 18, 2018 → Jul 6, 2018 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
Attn: O Gordon Williamson
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
K4FL (Advanced)

Last granted
May 18, 2018

Effective
May 18, 2018

Last action
Jul 6, 2018
FCC actions (3)
- Jul 6, 2018 — License canceled LICAN
- May 18, 2018 — Vanity call sign granted VANGRT
- May 18, 2018 — License issued LIISS
K4FL Canceled Amateur Extra · vanity Jan 26, 2018 → May 18, 2018 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
Attn: O Gordon Williamson
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
W9KC (Advanced)

Last granted
Jan 26, 2018

Effective
Jan 26, 2018

Last action
May 18, 2018
FCC actions (3)
- May 18, 2018 — License canceled LICAN
- Jan 26, 2018 — Vanity call sign granted VANGRT
- Jan 26, 2018 — License issued LIISS
W9KC Canceled Amateur Extra · vanity Apr 21, 2017 → Jan 26, 2018 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
AA9DX (Advanced)

Last granted
Apr 21, 2017

Effective
Apr 21, 2017

Last action
Jan 26, 2018
FCC actions (3)
- Jan 26, 2018 — License canceled LICAN
- Apr 21, 2017 — Vanity call sign granted VANGRT
- Apr 21, 2017 — License issued LIISS
AA9DX Canceled Amateur Extra · vanity Mar 25, 2017 → Apr 21, 2017 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
N4TT (Advanced)

Last granted
Mar 25, 2017

Effective
Mar 25, 2017

Last action
Apr 21, 2017
FCC actions (3)
- Apr 21, 2017 — License canceled LICAN
- Mar 25, 2017 — Vanity call sign granted VANGRT
- Mar 25, 2017 — License issued LIISS
N4TT Canceled Amateur Extra · vanity Jan 27, 2017 → Mar 25, 2017 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
K4FL (Advanced)

Last granted
Jan 27, 2017

Effective
Jan 27, 2017

Last action
Mar 25, 2017
FCC actions (3)
- Mar 25, 2017 — License canceled LICAN
- Jan 27, 2017 — Vanity call sign granted VANGRT
- Jan 27, 2017 — License issued LIISS
K4FL Canceled Amateur Extra · vanity Jun 14, 2016 → Jan 27, 2017 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
N4TT (Advanced)

Last granted
Jun 14, 2016

Effective
Jun 14, 2016

Last action
Jan 27, 2017
FCC actions (3)
- Jan 27, 2017 — License canceled LICAN
- Jun 14, 2016 — Vanity call sign granted VANGRT
- Jun 14, 2016 — License issued LIISS
N4TT Canceled Amateur Extra · vanity Jul 18, 2014 → Jun 14, 2016 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
K4FL (Advanced)

Last granted
Jul 18, 2014

Effective
Jul 18, 2014

Last action
Jun 14, 2016
FCC actions (3)
- Jun 14, 2016 — License canceled LICAN
- Jul 18, 2014 — Vanity call sign granted VANGRT
- Jul 18, 2014 — License issued LIISS
📦 Moved: Altamonte Springs, FL → Eustis, FL

K4FL Canceled Amateur Extra · vanity Dec 28, 2013 → Jul 18, 2014 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
39620 Forest Dr.
Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
K4IC (Advanced)

Last granted
Dec 28, 2013

Effective
Dec 28, 2013

Last action
Jul 18, 2014
FCC actions (3)
- Jul 18, 2014 — License canceled LICAN
- Dec 28, 2013 — Vanity call sign granted VANGRT
- Dec 28, 2013 — License issued LIISS
K4IC Canceled Amateur Extra · vanity Aug 17, 2012 → Dec 28, 2013 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
758 Little Wekiva Cr.
Altamonte Springs, FL 32714
28.6625, -81.4116 (ZIP center) · Grid EL98hp · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
N4TT (Advanced)

Last granted
Aug 17, 2012

Effective
Aug 17, 2012

Last action
Dec 28, 2013
FCC actions (3)
- Dec 28, 2013 — License canceled LICAN
- Aug 17, 2012 — Vanity call sign granted VANGRT
- Aug 17, 2012 — License issued LIISS
N4TT Canceled Amateur Extra · vanity Jan 4, 2012 → Aug 17, 2012 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
758 Little Wekiva Cr.
Altamonte Springs, FL 32714
28.6625, -81.4116 (ZIP center) · Grid EL98hp · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
K4FL (Advanced)

Last granted
Jan 4, 2012

Effective
Jan 4, 2012

Last action
Aug 17, 2012
FCC actions (3)
- Aug 17, 2012 — License canceled LICAN
- Jan 4, 2012 — Vanity call sign granted VANGRT
- Jan 4, 2012 — License issued LIISS
K4FL Canceled Amateur Extra · vanity Jul 30, 2010 → Jan 4, 2012 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
758 Little Wekiva Cr.
Altamonte Springs, FL 32714
28.6625, -81.4116 (ZIP center) · Grid EL98hp · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
K4IC (Advanced)

Last granted
Jul 30, 2010

Effective
Jul 30, 2010

Last action
Jan 4, 2012
FCC actions (3)
- Jan 4, 2012 — License canceled LICAN
- Jul 30, 2010 — Vanity call sign granted VANGRT
- Jul 30, 2010 — License issued LIISS
K4IC Canceled Amateur Extra · vanity Dec 18, 2009 → Jul 30, 2010 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
758 Little Wekiva Cr.
Altamonte Springs, FL 32714
28.6625, -81.4116 (ZIP center) · Grid EL98hp · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
N4TT (Advanced)

Last granted
Dec 18, 2009

Effective
Dec 18, 2009

Last action
Jul 30, 2010
FCC actions (3)
- Jul 30, 2010 — License canceled LICAN
- Dec 18, 2009 — Vanity call sign granted VANGRT
- Dec 18, 2009 — License issued LIISS
📦 Moved: Merritt Island, FL → Altamonte Springs, FL

N4TT Canceled Amateur Extra · vanity Sep 20, 2008 → Dec 18, 2009 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
758 Little Wekiva Cr.
Altamonte Springs, FL 32714
28.6625, -81.4116 (ZIP center) · Grid EL98hp · CQ 5 · ITU 8 · map ↗

FRN
0005892971

Previous call
W4WE (Advanced)

Last granted
Sep 20, 2008

Effective
Oct 11, 2008

Last action
Dec 18, 2009
FCC actions (4)
- Dec 18, 2009 — License canceled LICAN
- Oct 11, 2008 — Administrative update LIAUA
- Sep 20, 2008 — Vanity call sign granted VANGRT
- Sep 20, 2008 — License issued LIISS
W4WE Canceled Amateur Extra · vanity Jan 15, 2008 → Sep 20, 2008 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
1580 SYKES CREEK DRIVE
MERRITT ISLAND, FL 32853

FRN
0031900301

Previous call
N4VP (Advanced)

Last granted
Jan 15, 2008

Effective
Jan 15, 2008

Last action
May 20, 2025
FCC actions (3)
- Sep 20, 2008 — License canceled LICAN
- Jan 15, 2008 — Vanity call sign granted VANGRT
- Jan 15, 2008 — License issued LIISS
N4VP Canceled Amateur Extra · vanity Oct 27, 2007 → Jan 15, 2008 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
1580 SYKES CREEK DRIVE
MERRITT ISLAND, FL 32853

FRN
0005892971

Previous call
K2ER (Advanced)

Last granted
Oct 27, 2007

Effective
Oct 27, 2007

Last action
Jan 15, 2008
FCC actions (3)
- Jan 15, 2008 — License canceled LICAN
- Oct 27, 2007 — Vanity call sign granted VANGRT
- Oct 27, 2007 — License issued LIISS
K2ER Canceled Amateur Extra · vanity Sep 18, 2007 → Oct 27, 2007 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
1580 SYKES CREEK DRIVE
MERRITT ISLAND, FL 32853

FRN
0005892971

Previous call
AB4CQ (Advanced)

Last granted
Sep 18, 2007

Effective
Sep 18, 2007

Last action
Oct 27, 2007
FCC actions (3)
- Oct 27, 2007 — License canceled LICAN
- Sep 18, 2007 — Vanity call sign granted VANGRT
- Sep 18, 2007 — License issued LIISS
📦 Moved: Clearwater, FL → Merritt Island, FL

AB4CQ Canceled Amateur Extra Dec 18, 2001 → Sep 18, 2007 (canceled)

Licensee
O GORDON WILLIAMSON JR

Address
1580 SYKES CREEK DRIVE
MERRITT ISLAND, FL 32853

FRN
0005892971

Previous call
KC4CI (Advanced)

Last granted
Dec 18, 2001

Effective
Aug 9, 2007

Last action
Sep 18, 2007
FCC actions (3)
- Sep 18, 2007 — License canceled LICAN
- Aug 9, 2007 — Administrative update LIAUA
- Dec 18, 2001 — License renewed LIREN
W4WE Canceled Amateur Extra Sep 5, 1996 → Dec 25, 2005 (canceled)

Licensee
RICHARD G LEIS

Address
1300 MILTON ST
CLEARWATER, FL 34616

FRN
0031900301

Last granted
Sep 5, 1996

Effective
Sep 5, 1996

Last action
Dec 25, 2005
FCC actions (2)
- Jan 18, 2007 — Record corrected COR
- Jan 18, 2007 — Record corrected COR

Address history

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

Seen Mar 28, 2014 → Oct 4, 2026 · 252 snapshots · as K4FL
O GORDON WILLIAMSON JR
39620 Forest Dr., Eustis, FL 32736
28.9239, -81.4272 (street) · Grid EL98gw · CQ 5 · ITU 8 · map ↗
Seen May 27, 2010 → Oct 4, 2026 · 188 snapshots · as AB4CQ
O GORDON WILLIAMSON JR
1580 SYKES CREEK DRIVE, MERRITT ISLAND, FL 32853
Seen May 27, 2010 → Oct 4, 2026 · 226 snapshots · as N4TT
O GORDON WILLIAMSON JR
758 Little Wekiva Cr., Altamonte Springs, FL 32714
28.6625, -81.4116 (ZIP center) · Grid EL98hp · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as W4WE
RICHARD G LEIS
1300 MILTON ST, CLEARWATER, FL 34616
Seen Nov 7, 2004 · 1 snapshot · as AB4CQ
O GORDON WILLIAMSON JR
1050 Piedmont Lakes Blvd., Apopka, FL 32703
28.6536, -81.5207 (ZIP center) · Grid EL98fp · CQ 5 · ITU 8 · map ↗

Previous holder: Barry S Tepperman

Held AC4US Feb 11, 2000 → Aug 25, 2012 · first licensed Feb 11, 2000 as AC4US · 1 license · FRN 0001807122

AC4US Expired Amateur Extra Feb 11, 2000 → Aug 25, 2012 (expired)

Licensee
Barry S Tepperman

Address
706 Bellwood Ave.
Pittsburgh, PA 15229
40.5199, -80.0387 (ZIP center) · Grid EN90xm · CQ 5 · ITU 8 · map ↗

FRN
0001807122

Last granted
Jun 3, 2002

Effective
Mar 18, 2006

Last action
Aug 26, 2014
FCC actions (8)
- Aug 26, 2014 — License expired LIEXP
- Mar 18, 2006 — Administrative update LIAUA
- Sep 27, 2005 — Administrative update LIAUA
- Nov 10, 2004 — Administrative update LIAUA
- Jun 3, 2002 — License renewed LIREN
- Aug 18, 2000 — Administrative update LIAUA
- Mar 17, 2000 — License modified LIMOD
- Feb 11, 2000 — Administrative update LIAUA

Address history

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

Seen May 27, 2010 → Oct 4, 2026 · 47 snapshots · as AC4US
Barry S Tepperman
706 Bellwood Ave., Pittsburgh, PA 15229
40.5199, -80.0387 (ZIP center) · Grid EN90xm · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 · 1 snapshot · as AC4US
Barry S Tepperman
PO Box 784
21390 Johnson Road, Clements, CA 95227-0784
38.2104, -121.0513 (ZIP center) · Grid CM98lf · CQ 3 · ITU 6 · map ↗

Others requesting AC4US

5 applications listed AC4US as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Jul 19, 2021	Aug 6, 2021	K4FL · Both Sides Of The River Radio Club · Eustis, FL	2	Granted
Mar 4, 2021	Mar 22, 2021	W4UKC · JOSEPH A COUCH · WOODBRIDGE, VA	3	Granted
Jun 17, 2019	Jul 5, 2019	KN4UBD · John H Hinds · Wilmington, NC	20	Granted
Jun 18, 2018	Jul 6, 2018	W3LD · O GORDON WILLIAMSON JR · Eustis, FL	1	Granted
Feb 2, 2016	Feb 20, 2016	KW4QC · ROBERT B THOMPSON · ADVANCE, NC	13	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for AC4US in the last 24 hours. They show up here within seconds of AC4US beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.