N9TPB FCC License Search

🕒 FCC license data updated today 6:02 am CDT (FCC files through Oct 2, 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

KD4MUJ HAM

✅ Available for a vanity request — free since Mar 1, 2006.

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 Mar 1, 2006

Previous holder: HANS VAN OOSTROM

Held KD4MUJ Dec 11, 2001 → Feb 28, 2004 · first licensed Dec 11, 2001 as KD4MUJ · 2 licenses · FRN 0005851936

K4DVB Active Technician · vanity Feb 28, 2004 → expires Dec 2, 2035

Licensee
HANS VAN OOSTROM

Address
1724 SW 85th Dr
GAINESVILLE, FL 32607
29.6367, -82.4334 (street) · Grid EL89sp · CQ 5 · ITU 8 · map ↗

FRN
0005851936

Previous call
KD4MUJ

Last granted
Dec 2, 2025

Effective
Dec 2, 2025

Last action
Dec 2, 2025
FCC actions (6)
- Dec 2, 2025 — License renewed LIREN
- Jan 15, 2020 — Administrative update LIAUA
- Dec 24, 2013 — License renewed LIREN
- May 19, 2005 — Administrative update LIAUA
- Feb 28, 2004 — Vanity call sign granted VANGRT
- Feb 28, 2004 — License issued LIISS
KD4MUJ Canceled Technician Dec 11, 2001 → Feb 28, 2004 (canceled)

Licensee
HANS VAN OOSTROM

Address
4420 NW 31 Ter
GAINESVILLE, FL 32605-1409
29.6792, -82.3728 (ZIP center) · Grid EL89tq · CQ 5 · ITU 8 · map ↗

FRN
0005851936

Last granted
Nov 19, 2003

Effective
Nov 19, 2003

Last action
Feb 28, 2004
FCC actions (3)
- Feb 28, 2004 — License canceled LICAN
- Nov 19, 2003 — License renewed LIREN
- Dec 11, 2001 — Administrative update LIAUA

Address history

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

Seen Apr 16, 2022 → Sep 27, 2026 · 12 snapshots · as K4DVB
HANS VAN OOSTROM
1724 SW 85th Dr, GAINESVILLE, FL 32607
29.6367, -82.4334 (street) · Grid EL89sp · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 → Sep 27, 2026 · 48 snapshots · as KD4MUJ
HANS VAN OOSTROM
4420 NW 31 Ter, GAINESVILLE, FL 32605-1409
29.6792, -82.3728 (ZIP center) · Grid EL89tq · CQ 5 · ITU 8 · map ↗
Seen May 27, 2010 → May 6, 2019 · 34 snapshots · as K4DVB
HANS VAN OOSTROM
8816 SW 92ND LN, GAINESVILLE, FL 32608
29.5902, -82.3962 (ZIP center) · Grid EL89to · CQ 5 · ITU 8 · map ↗

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KD4MUJ in the last 24 hours. They show up here within seconds of KD4MUJ beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.