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

W4ZKK HAM

✅ Available for a vanity request — free since Jun 30, 2006.

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 Jun 30, 2006

Previous holder: JOHN D TROLINGER

Held W4ZKK Mar 16, 2001 → Jun 29, 2004 · first licensed Aug 27, 1998 as N3ZKK · 3 licenses · FRN 0003893633

📦 Moved: Ingram, TX → Kerrville, TX

N5ZKK Active Amateur Extra · vanity Jun 29, 2004 → expires Jun 29, 2034

Licensee
JOHN D TROLINGER

Address
506 Stonewall Street
Kerrville, TX 78028
30.0593, -99.1511 (street) · Grid EM00kb · CQ 4 · ITU 7 · map ↗

FRN
0003893633

Previous call
W4ZKK (General)

Last granted
May 25, 2024

Effective
May 25, 2024

Last action
May 25, 2024
FCC actions (5)
- May 25, 2024 — License renewed LIREN
- Apr 15, 2020 — License modified LIMOD
- Apr 15, 2014 — License renewed LIREN
- Jun 29, 2004 — Vanity call sign granted VANGRT
- Jun 29, 2004 — License issued LIISS
📦 Moved: Baltimore, MD → Ingram, TX

W4ZKK Canceled General · vanity Mar 16, 2001 → Jun 29, 2004 (canceled)

Licensee
JOHN D TROLINGER

Address
126 Pleasure Hill Rd
Ingram, TX 78025-9704
30.0778, -99.2854 (ZIP center) · Grid EM00ib · CQ 4 · ITU 7 · map ↗

FRN
0003893633

Previous call
N3ZKK (Technician Plus)

Last granted
Mar 16, 2001

Effective
Jun 11, 2004

Last action
Nov 22, 2006
FCC actions (4)
- Jun 29, 2004 — License canceled LICAN
- Jun 11, 2004 — Administrative update LIAUA
- Jun 8, 2001 — Administrative update LIAUA
- Mar 16, 2001 — License issued LIISS
N3ZKK Canceled General Aug 27, 1998 → Mar 16, 2001 (canceled)

Licensee
JOHN D TROLINGER

Address
411 LORRAINE AVE
BALTIMORE, MD 21221
39.2921, -76.4370 (ZIP center) · Grid FM19sh · CQ 5 · ITU 8 · map ↗

FRN
0003893633

Last granted
Aug 27, 1998

Effective
Aug 27, 1998

Last action
Mar 16, 2001
FCC actions (1)
- Mar 16, 2001 — License canceled LICAN

Address history

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

Seen May 22, 2014 → Oct 4, 2026 · 37 snapshots · as N5ZKK
JOHN D TROLINGER
506 Stonewall Street, Kerrville, TX 78028
30.0593, -99.1511 (street) · Grid EM00kb · CQ 4 · ITU 7 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 59 snapshots · as W4ZKK
JOHN D TROLINGER
126 Pleasure Hill Rd, Ingram, TX 78025-9704
30.0778, -99.2854 (ZIP center) · Grid EM00ib · CQ 4 · ITU 7 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as N3ZKK
JOHN D TROLINGER
411 LORRAINE AVE, BALTIMORE, MD 21221
39.2921, -76.4370 (ZIP center) · Grid FM19sh · CQ 5 · ITU 8 · map ↗

Others requesting W4ZKK

3 applications listed W4ZKK as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Nov 3, 2016	Nov 21, 2016	KM4QGM · Richard W Kindred · Horse Cave, KY	5	Granted
Jan 15, 2015	Feb 2, 2015	KE4OLQ · HOWARD C GRAVES III · OWENS CROSS ROADS, AL	18	Granted
Feb 26, 2001	Mar 16, 2001	N3ZKK · JOHN D TROLINGER · BALTIMORE, MD	1	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for W4ZKK in the last 24 hours. They show up here within seconds of W4ZKK beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.