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, WIN0IAU HAM
✅ Available for a vanity request — free since Nov 18, 2019.
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 Nov 18, 2019
Previous holder: WARREN W UNDERWOOD
Held N0IAU Dec 5, 2001 → Nov 17, 2017 · first licensed Dec 5, 2001 as N0IAU · 3 licenses · FRN 0004702684
-
- Licensee
- WARREN W UNDERWOOD
- Address
- 3612 WIND CHIME LANE
SAINT CHARLES, MO 63301
- FRN
- 0004702684
- Previous call
- W0WHO (Technician)
- Last granted
- Nov 17, 2017
- Effective
- Apr 10, 2026
- Last action
- Apr 10, 2026
FCC actions (2)
- Apr 10, 2026 — Systematic call sign granted SYSGRT
- Apr 10, 2026 — License issued LIISS
-
- Licensee
- WARREN W UNDERWOOD
- Address
- 3612 WIND CHIME LANE
SAINT CHARLES, MO 63301
- FRN
- 0004702684
- Previous call
- N0IAU (Technician)
- Last granted
- Nov 17, 2017
- Effective
- Jan 31, 2020
- Last action
- Apr 10, 2026
FCC actions (4)
- Apr 10, 2026 — License canceled LICAN
- Jan 31, 2020 — License modified LIMOD
- Nov 17, 2017 — Vanity call sign granted VANGRT
- Nov 17, 2017 — License issued LIISS
-
- Licensee
- WARREN W UNDERWOOD
- Address
- 3612 WIND CHIME LANE
SAINT CHARLES, MO 63301
- FRN
- 0004702684
- Last granted
- Sep 20, 2017
- Effective
- Sep 20, 2017
- Last action
- Nov 17, 2017
FCC actions (5)
- Nov 17, 2017 — License canceled LICAN
- Sep 20, 2017 — License renewed LIREN
- Dec 14, 2006 — License renewed LIREN
- Dec 5, 2001 — Administrative update LIAUA
- Dec 5, 2001 — Administrative update LIAUA
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
- Seen Nov 7, 2004 → Sep 27, 2026 · 65 snapshots · as N0IAU
WARREN W UNDERWOOD
3612 Wind Chime Lane, SAINT CHARLES, MO 63301
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for N0IAU in the last 24 hours. They show up here within seconds of N0IAU beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.