N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 5, 2026) · next update today 8:30 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

KJ4UN HAM

✅ Available for a vanity request — free since Oct 18, 2001.

2x2 call: 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 Oct 18, 2001

Previous holder: JOHN W MAST

Held KJ4UN Oct 17, 1989 → Oct 17, 1999 · first licensed Oct 17, 1989 as KJ4UN · 1 license · no FRN on file (pre-2001 records)

KJ4UN Expired Amateur Extra Oct 17, 1989 → Oct 17, 1999 (expired)

Licensee
JOHN W MAST

Address
PO Box 26
ROUTE 681
NELSONIA, VA 23414
37.8138, -75.5869 (ZIP center) · Grid FM27et · CQ 5 · ITU 8 · map ↗

Previous call
WB3JHR (Advanced)

Last granted
Oct 17, 1989

Effective
Oct 17, 1989

Last action
Oct 18, 2001
FCC actions (1)
- Oct 18, 2001 — License expired LIEXP

Address history

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

Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as KJ4UN
JOHN W MAST
PO Box 26
ROUTE 681, NELSONIA, VA 23414
37.8138, -75.5869 (ZIP center) · Grid FM27et · CQ 5 · ITU 8 · map ↗

Others requesting KJ4UN

1 application listed KJ4UN as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Jun 11, 2018	Jun 29, 2018	KD4PPG · LESLIE J GIFFORD JR · Greenbush, VA	1	Dismissed

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KJ4UN in the last 24 hours. They show up here within seconds of KJ4UN beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.