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
KT4OG
Not currently held
· 1 holder on record
· available since Mar 20, 2003
Previous holder: Michael S Higdon
Held KT4OG Apr 10, 1996 → Mar 19, 2001
· first licensed Apr 10, 1996 as KT4OG
· 4 licenses · FRN 0004790465
WA4TK
Active
Amateur Extra · vanity
May 8, 2026 → expires May 8, 2036
Licensee Michael S Higdon
Address 7414 Oswego Cir. LOUISVILLE, KY 40214
38.1573, -85.8067 (street) · Grid
EM78cd · CQ 4 · ITU 8 ·
map ↗
FRN 0004790465
Previous call K4LKY (Advanced)
Last granted May 8, 2026
Effective May 8, 2026
Last action May 8, 2026
FCC actions (2)
May 8, 2026 — Vanity call sign granted VANGRT May 8, 2026 — License issued LIISS
K4LKY
Canceled
Amateur Extra · vanity
Jul 12, 2016 → May 8, 2026 (canceled)
Licensee Michael S Higdon
Address 7414 Oswego Cir. LOUISVILLE, KY 40214
38.1573, -85.8067 (street) · Grid
EM78cd · CQ 4 · ITU 8 ·
map ↗
FRN 0004790465
Previous call AG4HI (Advanced)
Last granted Apr 14, 2026
Effective Apr 14, 2026
Last action May 8, 2026
FCC actions (5)
May 8, 2026 — License canceled LICAN Apr 14, 2026 — License renewed LIREN Dec 12, 2024 — FCC action LIAUA Jul 12, 2016 — Vanity call sign granted VANGRT Jul 12, 2016 — License issued LIISS
AG4HI
Canceled
Amateur Extra
Mar 19, 2001 → Jul 12, 2016 (canceled)
Licensee Michael S Higdon
Address 2341 Lindsey Dr. LOUISVILLE, KY 40216
38.1861, -85.8388 (ZIP center) · Grid
EM78be · CQ 4 · ITU 8 ·
map ↗
FRN 0004790465
Previous call KT4OG (Advanced)
Last granted Dec 10, 2014
Effective Mar 10, 2016
Last action Jul 12, 2016
FCC actions (7)
Jul 12, 2016 — License canceled LICAN Mar 10, 2016 — FCC action LIAUA Dec 10, 2014 — License renewed LIREN Sep 7, 2005 — FCC action LIAUA Jan 25, 2005 — License renewed LIREN May 14, 2003 — FCC action LIAUA Mar 19, 2001 — License issued LIISS
KT4OG
Canceled
Amateur Extra
Apr 10, 1996 → Mar 19, 2001 (canceled)
Licensee Michael S Higdon
Address 9817 W Ave Louisville, KY 40272
38.0785, -85.8531 (ZIP center) · Grid
EM78bb · CQ 4 · ITU 8 ·
map ↗
FRN 0004790465
Previous call KE4WJI (Advanced)
Last granted Apr 10, 1996
Effective Apr 10, 1996
Last action Mar 19, 2001
FCC actions (2)
Mar 19, 2001 — License canceled LICAN Mar 19, 2001 — FCC action LITIN
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Dec 20, 2024 → Sep 27, 2026 · 8 snapshots · as K4LKY
Michael S Higdon
7414 Oswego Cir., LOUISVILLE, KY 40214
38.1573, -85.8067 (street) · Grid
EM78cd · CQ 4 · ITU 8 ·
map ↗
Seen Mar 16, 2016 → Sep 27, 2026 · 43 snapshots · as AG4HI
Michael S Higdon
2341 Lindsey Dr., LOUISVILLE, KY 40216
38.1861, -85.8388 (ZIP center) · Grid
EM78be · CQ 4 · ITU 8 ·
map ↗
Seen Nov 7, 2004 → Sep 27, 2026 · 47 snapshots · as KT4OG
Michael S Higdon
9817 W Ave, Louisville, KY 40272
38.0785, -85.8531 (ZIP center) · Grid
EM78bb · CQ 4 · ITU 8 ·
map ↗
Seen May 27, 2010 → Feb 26, 2016 · 20 snapshots · as AG4HI
Michael S Higdon
3306 COLONIAL MANOR C R UNIT 7A, LOUISVILLE, KY 40218
38.1895, -85.6576 (ZIP center) · Grid
EM78ee · CQ 4 · ITU 8 ·
map ↗
Seen Nov 7, 2004 · 1 snapshot · as AG4HI
Michael S Higdon
Attn: MICHAEL HIGDON 402 LA FONTENAY CT, Louisville, KY 40223
38.2585, -85.5398 (ZIP center) · Grid
EM78fg · CQ 4 · ITU 8 ·
map ↗
Data: FCC Universal Licensing System, amateur service · refreshed nightly
n9tpb.com · 73 de N9TPB