N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 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, WI

KD4DTX HAM

✅ Available for a vanity request — free since Dec 15, 2020.

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 · 2 holders on record · available since Dec 15, 2020

Previous holder: Christopher A Kadlubowski

Held KD4DTX Oct 2, 2015 → Dec 14, 2018 · first licensed Jun 25, 2014 as KM4CPT · 4 licenses · FRN 0020501417

📦 Moved: Osgood, IN → Austin, IN

N9ICV Active Technician · vanity May 24, 2019 → expires May 24, 2029

Licensee
Christopher A Kadlubowski

Address
6950 N. Bogardus Rd.
Austin, IN 47102
38.7933, -85.7582 (street) · Grid EM78ct · CQ 4 · ITU 8 · map ↗

FRN
0020501417

Previous call
KD4SKI

Last granted
May 24, 2019

Effective
Oct 4, 2023

Last action
Oct 4, 2023
FCC actions (5)
- Oct 4, 2023 — Administrative update LIAUA
- Aug 11, 2022 — Administrative update LIAUA
- Aug 4, 2022 — Administrative update LIAUA
- May 24, 2019 — Vanity call sign granted VANGRT
- May 24, 2019 — License issued LIISS
KD4SKI Canceled Technician · vanity Dec 14, 2018 → May 24, 2019 (canceled)

Licensee
Christopher A Kadlubowski

Address
242 W. Beech St.
Osgood, IN 47037
39.1695, -85.3257 (ZIP center) · Grid EM79ie · CQ 4 · ITU 8 · map ↗

FRN
0020501417

Previous call
KD4DTX

Last granted
Dec 14, 2018

Effective
Dec 14, 2018

Last action
May 24, 2019
FCC actions (3)
- May 24, 2019 — License canceled LICAN
- Dec 14, 2018 — Vanity call sign granted VANGRT
- Dec 14, 2018 — License issued LIISS
📦 Moved: Wyandotte, MI → Osgood, IN

KD4DTX Canceled Technician · vanity Oct 2, 2015 → Dec 14, 2018 (canceled)

Licensee
Christopher A Kadlubowski

Address
242 W. Beech St.
Osgood, IN 47037
39.1695, -85.3257 (ZIP center) · Grid EM79ie · CQ 4 · ITU 8 · map ↗

FRN
0020501417

Previous call
KM4CPT

Last granted
Oct 2, 2015

Effective
Oct 20, 2018

Last action
Dec 14, 2018
FCC actions (5)
- Dec 14, 2018 — License canceled LICAN
- Oct 20, 2018 — Administrative update LIAUA
- Dec 20, 2016 — Administrative update LIAUA
- Oct 2, 2015 — Vanity call sign granted VANGRT
- Oct 2, 2015 — License issued LIISS
KM4CPT Canceled Technician Jun 25, 2014 → Oct 2, 2015 (canceled)

Licensee
Christopher A Kadlubowski

Address
4307 17th St
Wyandotte, MI 48192
42.2107, -83.1572 (ZIP center) · Grid EN82kf · CQ 4 · ITU 8 · map ↗

FRN
0020501417

Last granted
Jun 25, 2014

Effective
Jul 7, 2015

Last action
Oct 2, 2015
FCC actions (5)
- Oct 2, 2015 — License canceled LICAN
- Jul 7, 2015 — Administrative update LIAUA
- Jul 29, 2014 — Administrative update LIAUA
- Jun 25, 2014 — License issued LIISS
- Jun 25, 2014 — Systematic call sign granted SYSGRT

Address history

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

Seen Apr 27, 2024 → Oct 4, 2026 · 12 snapshots · as N9ICV
Christopher A Kadlubowski
6950 N. Bogardus Rd., Austin, IN 47102
38.7933, -85.7582 (street) · Grid EM78ct · CQ 4 · ITU 8 · map ↗
Seen Jan 22, 2019 → Oct 4, 2026 · 31 snapshots · as KD4DTX
Christopher A Kadlubowski
242 W. Beech St., Osgood, IN 47037
39.1695, -85.3257 (ZIP center) · Grid EM79ie · CQ 4 · ITU 8 · map ↗
Seen Aug 2, 2015 → Oct 4, 2026 · 41 snapshots · as KM4CPT
Christopher A Kadlubowski
4307 17th St, Wyandotte, MI 48192
42.2107, -83.1572 (ZIP center) · Grid EN82kf · CQ 4 · ITU 8 · map ↗
Seen Dec 31, 2016 → Sep 3, 2018 · 8 snapshots · as KD4DTX
Christopher A Kadlubowski
904 Oak St, Wyandotte, MI 48192
42.2107, -83.1572 (ZIP center) · Grid EN82kf · CQ 4 · ITU 8 · map ↗
Seen Mar 28, 2015 → Jun 6, 2015 · 3 snapshots · as KM4CPT
Christopher A Kadlubowski
4469 High St APT #19, Ecorse, MI 48229
42.2496, -83.1404 (ZIP center) · Grid EN82kf · CQ 4 · ITU 8 · map ↗

Previous holder: BRAD R MASON

Held KD4DTX Nov 7, 2001 → Feb 4, 2012 · first licensed Nov 7, 2001 as KD4DTX · 1 license · FRN 0005293972

KD4DTX Expired Technician Nov 7, 2001 → Feb 4, 2012 (expired)

Licensee
BRAD R MASON

Address
619 MAGNOLIA LN
PEACHTREE CITY, GA 30269
33.3939, -84.5693 (ZIP center) · Grid EM73rj · CQ 5 · ITU 8 · map ↗

FRN
0005293972

Last granted
Nov 7, 2001

Effective
Nov 7, 2001

Last action
Feb 5, 2014
FCC actions (4)
- Feb 5, 2014 — License expired LIEXP
- Nov 7, 2001 — License renewed LIREN
- Nov 7, 2001 — FCC action LITIN
- Nov 7, 2001 — FCC action LITIN

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 KD4DTX
BRAD R MASON
619 MAGNOLIA LN, PEACHTREE CITY, GA 30269
33.3939, -84.5693 (ZIP center) · Grid EM73rj · CQ 5 · ITU 8 · map ↗

Others requesting KD4DTX

2 applications listed KD4DTX as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Sep 14, 2015	Oct 2, 2015	KM4CPT · Christopher A Kadlubowski · Wyandotte, MI	1	Granted
Sep 14, 2015	Oct 2, 2015	KM4CPT · Christopher A Kadlubowski · Wyandotte, MI	1	Dismissed

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KD4DTX in the last 24 hours. They show up here within seconds of KD4DTX beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.