N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 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

KD4WFY HAM

✅ Available for a vanity request — free since Dec 13, 2008.

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 Dec 13, 2008

Previous holder: MARK A RUDOLPH

Held KD4WFY Jul 8, 2003 → Dec 12, 2006 · first licensed Jul 8, 2003 as KD4WFY · 2 licenses · FRN 0009264706

NR4Z Active Amateur Extra · vanity Dec 12, 2006 → expires Dec 12, 2027

Licensee
MARK A RUDOLPH

Address
14130 RANDALL DR
WOODBRIDGE, VA 22191
38.6439, -77.2574 (street) · Grid FM18ip · CQ 5 · ITU 8 · map ↗

FRN
0009264706

Previous call
KD4WFY (Advanced)

Last granted
Sep 19, 2018

Effective
Sep 19, 2018

Last action
Sep 19, 2018
FCC actions (5)
- Sep 19, 2018 — License renewed LIREN
- Mar 28, 2015 — Administrative update LIAUA
- Jan 21, 2015 — Administrative update LIAUA
- Dec 12, 2006 — Vanity call sign granted VANGRT
- Dec 12, 2006 — License issued LIISS
KD4WFY Canceled Amateur Extra Jul 8, 2003 → Dec 12, 2006 (canceled)

Licensee
MARK A RUDOLPH

Address
4121 HOFFMAN DR
WOODBRIDGE, VA 22193
38.6441, -77.3505 (ZIP center) · Grid FM18hp · CQ 5 · ITU 8 · map ↗

FRN
0009264706

Last granted
Jul 8, 2003

Effective
Jul 8, 2003

Last action
Dec 12, 2006
FCC actions (3)
- Dec 12, 2006 — License canceled LICAN
- Jul 8, 2003 — FCC action LITIN
- Jul 8, 2003 — License renewed LIREN

Address history

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

Seen Jan 22, 2019 → Oct 4, 2026 · 15 snapshots · as NR4Z
MARK A RUDOLPH
14130 RANDALL DR, WOODBRIDGE, VA 22191
38.6439, -77.2574 (street) · Grid FM18ip · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 59 snapshots · as KD4WFY
MARK A RUDOLPH
4121 HOFFMAN DR, WOODBRIDGE, VA 22193
38.6441, -77.3505 (ZIP center) · Grid FM18hp · CQ 5 · ITU 8 · map ↗
Seen May 19, 2015 → Sep 3, 2018 · 20 snapshots · as NR4Z
MARK A RUDOLPH
14130 Randall Dr., Woodbridge, VA 22191
38.6229, -77.2629 (ZIP center) · Grid FM18io · CQ 5 · ITU 8 · map ↗
Seen Mar 28, 2015 · 1 snapshot · as NR4Z
MARK A RUDOLPH
226 Glenridge Dr., Winchester, VA 22602
39.1442, -78.2848 (ZIP center) · Grid FM09ud · CQ 5 · ITU 8 · map ↗

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KD4WFY in the last 24 hours. They show up here within seconds of KD4WFY beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.