N9TPB FCC License Search

🕒 FCC license data updated today 8:30 am CDT (FCC files through Oct 1, 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

K4ISP HAM

✅ Available for a vanity request — free since Mar 20, 2026.

1x3 call: Technician, General, Advanced and 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 · 1 holder on record · available since Mar 20, 2026

Previous holder: JONATHAN L KERFOOT

Held K4ISP May 11, 2007 → Mar 19, 2024 · first licensed Apr 23, 2003 as KG4ZVT · 3 licenses · FRN 0008841421

AB4YZ Active Amateur Extra · vanity Mar 19, 2024 → expires Mar 19, 2034

Licensee
JONATHAN L KERFOOT

Address
13011 S 78th East Ave
BIXBY, OK 74008
35.9748, -95.8895 (street) · Grid EM25bx · CQ 4 · ITU 7 · map ↗

FRN
0008841421

Previous call
K4ISP (Technician)

Last granted
Mar 19, 2024

Effective
Mar 19, 2024

Last action
Mar 19, 2024
FCC actions (2)
- Mar 19, 2024 — Vanity call sign granted VANGRT
- Mar 19, 2024 — License issued LIISS
📦 Moved: Broken Arrow, OK → Bixby, OK

K4ISP Canceled Amateur Extra · vanity May 11, 2007 → Mar 19, 2024 (canceled)

Licensee
JONATHAN L KERFOOT

Address
13011 S 78th East Ave
BIXBY, OK 74008
35.9748, -95.8895 (street) · Grid EM25bx · CQ 4 · ITU 7 · map ↗

FRN
0008841421

Previous call
KG4ZVT (Technician)

Last granted
Apr 19, 2017

Effective
Apr 19, 2017

Last action
Mar 19, 2024
FCC actions (5)
- Mar 19, 2024 — License canceled LICAN
- Apr 19, 2017 — License renewed LIREN
- Dec 19, 2009 — Administrative update LIAUA
- May 11, 2007 — Vanity call sign granted VANGRT
- May 11, 2007 — License issued LIISS
KG4ZVT Canceled Amateur Extra Apr 23, 2003 → May 11, 2007 (canceled)

Licensee
JONATHAN L KERFOOT

Address
1121 E OMAHA ST APT A4
BROKEN ARROW, OK 74012
36.0514, -95.8057 (ZIP center) · Grid EM26cb · CQ 4 · ITU 7 · map ↗

FRN
0008841421

Last granted
Apr 23, 2003

Effective
Mar 29, 2007

Last action
May 11, 2007
FCC actions (4)
- May 11, 2007 — License canceled LICAN
- Mar 29, 2007 — License modified LIMOD
- Mar 24, 2006 — Administrative update LIAUA
- Apr 23, 2003 — License issued LIISS

Address history

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

Seen May 27, 2010 → Sep 27, 2026 · 46 snapshots · as KG4ZVT
JONATHAN L KERFOOT
1121 E OMAHA ST APT A4, BROKEN ARROW, OK 74012
36.0514, -95.8057 (ZIP center) · Grid EM26cb · CQ 4 · ITU 7 · map ↗
Seen May 27, 2010 → Sep 27, 2026 · 57 snapshots · as K4ISP
JONATHAN L KERFOOT
13011 S 78th East Ave, BIXBY, OK 74008
35.9748, -95.8895 (street) · Grid EM25bx · CQ 4 · ITU 7 · map ↗
Seen Nov 7, 2004 · 1 snapshot · as KG4ZVT
JONATHAN L KERFOOT
5629 OLD WAKE FOREST RD APT B, RALEIGH, NC 27609-5077
35.8438, -78.6336 (ZIP center) · Grid FM05qu · CQ 5 · ITU 8 · map ↗

Others requesting K4ISP

2 applications listed K4ISP as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Apr 23, 2007	May 11, 2007	KG4ZVT · JONATHAN L KERFOOT · BROKEN ARROW, OK	1	Granted
Apr 28, 2004	May 16, 2004	KI4FBR · David F Elger · Daytona Beach, FL	5	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for K4ISP in the last 24 hours. They show up here within seconds of K4ISP beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.