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

KJ4DIY HAM

Amateur Extra class licensed since 2015 (11 yrs) KJ4DIY since 2015 · previously KM4NNN Apo, AE

🔒 Not available — currently licensed, through Oct 16, 2035. If it isn't renewed, it opens for vanity requests Oct 17, 2037.

📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH

📝 KJ4DIY has filed vanity applications before — latest filed Jul 24, 2025 · what was requested

Currently held by Matthew J Reichert · 2 holders on record

Current holder: Matthew J Reichert

Held KJ4DIY Oct 16, 2015 → present · first licensed Sep 25, 2015 as KM4NNN · 2 licenses · FRN 0024918583

📦 Moved: Portsmouth, VA → Apo, AE

KJ4DIY Active Amateur Extra · vanity Oct 16, 2015 → expires Oct 16, 2035

Licensee
Matthew J Reichert

Address
Attn: Matthew Reichert
PSC 467 Box 5825
APO, AE 09096

FRN
0024918583

Previous call
KM4NNN (General)

Last granted
Aug 19, 2025

Effective
Sep 11, 2026

Last action
Sep 11, 2026
FCC actions (9)
- Sep 11, 2026 — Administrative update LIAUA
- Aug 19, 2025 — License renewed LIREN
- Jan 28, 2025 — License modified LIMOD
- Dec 24, 2024 — Administrative update LIAUA
- Sep 7, 2022 — Administrative update LIAUA
- Jun 1, 2020 — Administrative update LIAUA
- May 15, 2018 — Administrative update LIAUA
- Oct 16, 2015 — Vanity call sign granted VANGRT
- Oct 16, 2015 — License issued LIISS
KM4NNN Canceled General Sep 25, 2015 → Oct 16, 2015 (canceled)

Licensee
Matthew J Reichert

Address
221 Armstrong St
Portsmouth, VA 23704
36.8267, -76.3120 (ZIP center) · Grid FM16ut · CQ 5 · ITU 8 · map ↗

FRN
0024918583

Last granted
Sep 25, 2015

Effective
Sep 25, 2015

Last action
Oct 16, 2015
FCC actions (3)
- Oct 16, 2015 — License canceled LICAN
- Sep 25, 2015 — License issued LIISS
- Sep 25, 2015 — 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 Sep 27, 2026 → Oct 4, 2026 · 2 snapshots · as KJ4DIY
Matthew J Reichert
Attn: Matthew Reichert
PSC 467 Box 5825, APO, AE 09096
Seen Nov 16, 2015 → Oct 4, 2026 · 46 snapshots · as KM4NNN
Matthew J Reichert
221 Armstrong St, Portsmouth, VA 23704
36.8267, -76.3120 (ZIP center) · Grid FM16ut · CQ 5 · ITU 8 · map ↗
Seen Sep 25, 2025 · 1 snapshot · as KJ4DIY
Matthew J Reichert
PSC 812 Box 391, FPO, AE 09627
Seen Apr 27, 2024 → May 29, 2025 · 9 snapshots · as KJ4DIY
Matthew J Reichert
4403 SW 101st St, Seattle, WA 98146
47.5001, -122.3612 (ZIP center) · Grid CN87tm · CQ 3 · ITU 6 · map ↗
Seen Apr 16, 2022 · 1 snapshot · as KJ4DIY
Matthew J Reichert
8314 Scotland Loop, Manassas, VA 20109
38.7939, -77.5310 (ZIP center) · Grid FM18ft · CQ 5 · ITU 8 · map ↗
Seen Sep 3, 2018 → May 6, 2019 · 3 snapshots · as KJ4DIY
Matthew J Reichert
13664 Bent Tree Circle Apt 203, Centreville, VA 20121
38.8110, -77.4629 (ZIP center) · Grid FM18gt · CQ 5 · ITU 8 · map ↗

Previous holder: Howard J Witzenburger

Held KJ4DIY Apr 16, 2008 → Mar 3, 2009 · first licensed Apr 16, 2008 as KJ4DIY · 2 licenses · FRN 0017672361

📦 Moved: Orlando, FL → Winter Park, FL

AJ4OP Active Amateur Extra Mar 3, 2009 → expires Apr 16, 2028

Licensee
Howard J Witzenburger

Address
1109 HELEN ST
WINTER PARK, FL 32708
28.6919, -81.3165 (street) · Grid EL98iq · CQ 5 · ITU 8 · map ↗

FRN
0017672361

Previous call
KJ4DIY (General)

Last granted
Feb 2, 2018

Effective
Feb 2, 2018

Last action
Feb 2, 2018
FCC actions (5)
- Feb 2, 2018 — Administrative update LIAUA
- Feb 2, 2018 — License renewed LIREN
- Nov 11, 2009 — Administrative update LIAUA
- Mar 3, 2009 — Systematic call sign granted SYSGRT
- Mar 3, 2009 — License issued LIISS
KJ4DIY Canceled Amateur Extra Apr 16, 2008 → Mar 3, 2009 (canceled)

Licensee
Howard J Witzenburger

Address
129 Lynbrook Drive
Orlando, FL 32807
28.5537, -81.3007 (ZIP center) · Grid EL98in · CQ 5 · ITU 8 · map ↗

FRN
0017672361

Last granted
Apr 16, 2008

Effective
Jul 8, 2008

Last action
Mar 3, 2009
FCC actions (5)
- Mar 3, 2009 — License canceled LICAN
- Jul 8, 2008 — License modified LIMOD
- May 14, 2008 — License modified LIMOD
- Apr 16, 2008 — License issued LIISS
- Apr 16, 2008 — 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 May 7, 2018 → Oct 4, 2026 · 17 snapshots · as AJ4OP
Howard J Witzenburger
1109 HELEN ST, WINTER PARK, FL 32708
28.6919, -81.3165 (street) · Grid EL98iq · CQ 5 · ITU 8 · map ↗
Seen May 27, 2010 → Oct 4, 2026 · 47 snapshots · as KJ4DIY
Howard J Witzenburger
129 Lynbrook Drive, Orlando, FL 32807
28.5537, -81.3007 (ZIP center) · Grid EL98in · CQ 5 · ITU 8 · map ↗
Seen May 27, 2010 → Jan 2, 2018 · 30 snapshots · as AJ4OP
Howard J Witzenburger
1109Helen St, Casselberry, FL 32707
28.6641, -81.3149 (ZIP center) · Grid EL98ip · CQ 5 · ITU 8 · map ↗

Vanity applications filed by KJ4DIY

Calls this licensee has asked the FCC for, newest first, in their order of preference. The FCC processes applications 18 days after filing; "likely award" is our estimate from every pending application in filing order.

Filed · Award	Applicant	Requested (in order)	Status
Filed Jul 24, 2025 Award date was Aug 11, 2025 0011662117	KJ4DIY · Matthew J Reichert · Amateur Extra PSC 812 Box 391, FPO, AE 09627	1.K4PR held 2.K4NY held	Dismissed
Filed Sep 28, 2015 Granted Aug 19, 2025 0006961917	KM4NNN · Matthew J Reichert · General 221 Armstrong St, Portsmouth, VA 23704 36.8267, -76.3120 (ZIP center) · Grid FM16ut · CQ 5 · ITU 8 · map ↗	1.KJ4DIY ✓ granted	Granted got KJ4DIY

Others requesting KJ4DIY

1 application listed KJ4DIY as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Sep 28, 2015	Oct 16, 2015	KM4NNN · Matthew J Reichert · Portsmouth, VA	1	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KJ4DIY in the last 24 hours. They show up here within seconds of KJ4DIY beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.