N9TPB FCC License Search

🕒 FCC license data updated yesterday 6:03 am CDT (FCC files through Oct 23, 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)

N9RTJ HAM

✅ Available for a vanity request — free since Feb 5, 2014.

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 Feb 5, 2014

Previous holder: Michael J Sajdowitz

Held N9RTJ Jan 5, 1993 → Feb 4, 2012 · first licensed Jan 5, 1993 as N9RTJ · 2 licenses · FRN 0007769862

K9RTJ Active Amateur Extra · vanity Feb 4, 2012 → expires Feb 4, 2032

Licensee
Michael J Sajdowitz

Address
W220 N2716 Maplewood Ln
Waukesha, WI 53186
43.0683, -88.1867 (street) · Grid EN53vb · CQ 4 · ITU 8 · map ↗

FRN
0007769862

Previous call
N9RTJ (General)

Last granted
Nov 9, 2021

Effective
Nov 9, 2021

Last action
Nov 9, 2021
FCC actions (6)
- Nov 9, 2021 — License renewed LIREN
- Feb 3, 2016 — License modified LIMOD
- Jun 3, 2014 — Administrative update LIAUA
- May 29, 2014 — Administrative update LIAUA
- Feb 4, 2012 — Vanity call sign granted VANGRT
- Feb 4, 2012 — License issued LIISS
N9RTJ Canceled General Jan 5, 1993 → Feb 4, 2012 (canceled)

Licensee
Michael J Sajdowitz

Address
558 W College Avenue
Waukesha, WI 53186
43.0222, -88.2047 (ZIP center) · Grid EN53va · CQ 4 · ITU 8 · map ↗

FRN
0007769862

Last granted
Oct 7, 2002

Effective
Jan 9, 2012

Last action
Feb 4, 2012
FCC actions (4)
- Feb 4, 2012 — License canceled LICAN
- Jan 9, 2012 — License modified LIMOD
- Oct 7, 2002 — License renewed LIREN
- Oct 7, 2002 — FCC action LITIN

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 Oct 25, 2002 → Apr 17, 2003 · 2 discs
N9RTJ · Technician · issued Oct 7, 2002, expires Jan 5, 2013
MICHAEL J SAJDOWITZ
558 W COLLEGE AVE, WAUKESHA, WI 53186
Seen Sep 9, 1993 → Apr 27, 2002 · 17 discs
N9RTJ · Technician · issued Jan 5, 1993, expires Jan 5, 2003
MICHAEL J. SAJDOWITZ
558 W COLLEGE AVE, WAUKESHA, WI 53186

Address history

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

Seen Mar 28, 2015 → Oct 18, 2026 · 38 snapshots · as K9RTJ
Michael J Sajdowitz
W220 N2716 Maplewood Ln, Waukesha, WI 53186
43.0683, -88.1867 (street) · Grid EN53vb · CQ 4 · ITU 8 · map ↗
Seen May 28, 2012 → Oct 18, 2026 · 54 snapshots · as N9RTJ
Michael J Sajdowitz
558 W College Avenue, Waukesha, WI 53186
43.0222, -88.2047 (ZIP center) · Grid EN53va · CQ 4 · ITU 8 · map ↗
Seen Nov 7, 2004 → Nov 10, 2011 · 4 snapshots · as N9RTJ
MICHAEL J SAJDOWITZ
558 W COLLEGE AVE, WAUKESHA, WI 53186
43.0222, -88.2047 (ZIP center) · Grid EN53va · CQ 4 · ITU 8 · map ↗

N9RTJ in the Printed Callbooks, 1909–1997

From scanned copies of the printed callbooks (government lists from 1913, then the Radio Amateur Callbook to 1997), read by OCR, so names and streets can carry typos. Each line is one or more editions in a row showing the same name at the same address.

1997 · 1 edition
N9RTJ
T Micfiae1 J Sajdowitz
55b W Co!o~e Ave' Waukesha, WI 53186
1997 p.1943

📡 On the Air: APRS, Digital & WSPR Spots

No APRS positions, PSK Reporter reports or WSPR spots for N9RTJ in the last 24 hours. They show up here within seconds of N9RTJ beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.