N9TPB
FCC License Search
🕒 FCC license data updated today 8:30 am CDT (FCC files through Oct 1, 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, WIN1ZSW HAM
✅ Available for a vanity request — free since Feb 28, 2009.
1x3 call: Technician, General, Advanced and Amateur Extra licensees can request it.
No pending applications list it.
📬 QSL: no LoTW uploads on record · eQSL AG member · QRZ · HamQTH
Not currently held · 1 holder on record · available since Feb 28, 2009
Previous holder: RONALD A PFEIFFER
Held N1ZSW Jun 17, 2003 → Feb 27, 2007 · first licensed as WB0AFR · 3 licenses · FRN 0007328511
-
📦 Moved: Worcester, MA → Marlborough, MA
- Licensee
- RONALD A PFEIFFER
- Address
- 22 Karopulios Drive
Marlborough, MA 01752
- FRN
- 0007328511
- Previous call
- N1ZSW
- Last granted
- Dec 6, 2016
- Effective
- Apr 17, 2020
- Last action
- Apr 17, 2020
FCC actions (6)
- Apr 17, 2020 — Administrative update LIAUA
- Dec 6, 2016 — License renewed LIREN
- May 18, 2010 — Administrative update LIAUA
- Mar 17, 2010 — Administrative update LIAUA
- Feb 27, 2007 — Vanity call sign granted VANGRT
- Feb 27, 2007 — License issued LIISS
-
📦 Moved: , None → Worcester, MA
- Licensee
- RONALD A PFEIFFER
- Address
- 784 FRANKLIN ST
WORCESTER, MA 01604-1706
- FRN
- 0007328511
- Previous call
- WB0AFR
- Last granted
- Jun 17, 2003
- Effective
- Jun 17, 2003
- Last action
- Feb 27, 2007
FCC actions (2)
- Feb 27, 2007 — License canceled LICAN
- Jun 17, 2003 — License renewed LIREN
-
- Licensee
- RONALD A PFEIFFER
- Address
- Last granted
- Effective
- Last action
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 W2CTX
RONALD A PFEIFFER
22 Karopulios Drive, Marlborough, MA 01752 - Seen Nov 7, 2004 → Sep 27, 2026 · 47 snapshots · as WB0AFR
RONALD A PFEIFFER
- Seen Nov 7, 2004 → Sep 27, 2026 · 47 snapshots · as N1ZSW
RONALD A PFEIFFER
784 FRANKLIN ST, WORCESTER, MA 01604-1706 - Seen May 27, 2010 → May 6, 2019 · 34 snapshots · as W2CTX
RONALD A PFEIFFER
143 Saddler Lane, West Barnstable, MA 02668
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for N1ZSW in the last 24 hours. They show up here within seconds of N1ZSW beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.