N9TPB
FCC License Search
🕒 FCC license data updated yesterday 7:15 am CDT (FCC files through Oct 14, 2026) · next update today 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)KB3DFI HAM
✅ Available for a vanity request — free since Jul 12, 2010.
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 Jul 12, 2010
Previous holder: THOMAS C UNDERWOOD
Held KB3DFI Nov 25, 1998 → Jul 11, 2008
· first licensed Mar 2, 1993 as N3OLN
· 2 licenses · FRN 0017892548
📖 In the printed callbooks since 1981 as N6CFJ, before the FCC's online records
-
- Licensee
- THOMAS C UNDERWOOD
- Address
- 25168 WATCH GOOSE FARM ROAD
SAINT MICHAELS, MD 21663-2746
- FRN
- 0017892548
- Previous call
- KB3DFI
- Last granted
- Apr 20, 2018
- Effective
- Jun 1, 2018
- Last action
- Jun 1, 2018
FCC actions (6)
- Jun 14, 2018 — Authorization printed AUTHPR
- Jun 13, 2018 — FCC action RCDUP
- Jun 1, 2018 — Administrative update LIAUA
- Apr 20, 2018 — License renewed LIREN
- Jul 11, 2008 — Vanity call sign granted VANGRT
- Jul 11, 2008 — License issued LIISS
-
- Licensee
- THOMAS C UNDERWOOD
- Address
- 25168 WATCH GOOSE FARM RD
SAINT MICHAELS, MD 21663
- FRN
- 0017892548
- Previous call
- N3OLN
- Last granted
- Nov 25, 1998
- Effective
- Nov 25, 1998
- Last action
- Jul 11, 2008
FCC actions (2)
- Jul 11, 2008 — License canceled LICAN
- Jun 23, 2008 — FCC action ESCFRN
Callbook Records, 1993–2003
From the FCC amateur database as published on the QRZ! callsign CD-ROMs, 1993–2003, before and alongside the FCC's online records (which start in 1999). "Seen" dates are the first and last disc showing that record; the issue date is the FCC's, so it can be a renewal of an even older license.
- Seen Apr 7, 1999 → Apr 17, 2003 · 9 discs
KB3DFI · General · issued Nov 25, 1998, expires Nov 25, 2008 · previously N3OLN
THOMAS C. UNDERWOOD
25168 WATCH GOOSE FARM RD, SAINT MICHAELS, MD 21663 - Seen Sep 9, 1993 → Nov 11, 1998 · 10 discs
N3OLN · General · issued Mar 2, 1993, expires Mar 2, 2003 · previously N6CFJ
THOMAS C UNDERWOOD
1901 EDNOR RD, SILVER SPRING, MD 20905
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for KB3DFI in the last 24 hours. They show up here within seconds of KB3DFI beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.