N9TPB FCC License Search

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

Ken W Ball

FRN 0029618212 · first licensed May 29, 2020 as KO4DTR · 2 licenses on record

📝 FCC applications (4)

Received	File number	Service	Purpose	Status	Call
Mar 4, 2026	0011932449	HAM	Modification	Granted	KO4DTR
Mar 4, 2026	0011919526	HAM	Withdrawal	Withdrawn	KO4DTR
Mar 23, 2022	0009966299	HAM	Modification	Granted	KO4DTR
May 29, 2020	0009094152	HAM	New license	Granted	KO4DTR

Complete licensing history

K0KDB Active General · vanity Mar 24, 2026 → expires Mar 24, 2036

Licensee
Ken W Ball

Address
PO Box 2721
Cullman, AL 35056

FRN
0029618212

Previous call
KO4DTR (Technician)

Last granted
Mar 24, 2026

Effective
Mar 24, 2026

Last action
Mar 24, 2026
FCC actions (2)
- Mar 24, 2026 — Vanity call sign granted VANGRT
- Mar 24, 2026 — License issued LIISS
KO4DTR Canceled General May 29, 2020 → Mar 24, 2026 (canceled)

Licensee
Ken W Ball

Address
PO Box 2721
Cullman, AL 35056

FRN
0029618212

Last granted
May 29, 2020

Effective
Mar 23, 2022

Last action
Mar 24, 2026
FCC actions (4)
- Mar 24, 2026 — License canceled LICAN
- Mar 23, 2022 — License modified LIMOD
- May 29, 2020 — License issued LIISS
- May 29, 2020 — 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 16, 2022 → Oct 4, 2026 · 15 snapshots · as KO4DTR
Ken W Ball
PO Box 2721
Cullman, AL 35056

Vanity applications

Filed · Award	Applicant	Requested (in order)	Status
Filed Mar 4, 2026 Granted Mar 24, 2026 0011932449	KO4DTR · Ken W Ball · General PO Box 2721 · Cullman, AL 35056	1.K0KDB ✓ granted 2.K1KDB 3.K2KDB 4.K0KWB held 5.W0KDB held 6.K0DTR available 7.W0KWB held 8.N0KWB held 9.W0KRB available 10.N0KRB held	Granted got K0KDB