N9TPB FCC License Search

🕒 FCC license data updated yesterday 9:42 am CDT (FCC files through Sep 30, 2026) · next update today 9:15 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

KO4AX HAM

✅ Available for a vanity request — free since May 1, 2003.

2x2 call: Advanced and Amateur Extra licensees can request it. No pending applications list it.

Not currently held · 1 holder on record · available since May 1, 2003

Previous holder: LEONARD BARON

Held KO4AX Apr 30, 1991 → Apr 30, 2001 · first licensed Apr 30, 1991 as KO4AX · 1 license · no FRN on file (pre-2001 records)

KO4AX Expired Advanced Apr 30, 1991 → Apr 30, 2001 (expired)

Licensee
LEONARD BARON

Address
1448 SW 13 PL
BOCA RATON, FL 33486
26.3475, -80.1148 (ZIP center) · Grid EL96wi · CQ 5 · ITU 8 · map ↗

Previous call
KC4VZI (General)

Last granted
Apr 30, 1991

Effective
Apr 30, 1991

Last action
May 1, 2003
FCC actions (1)
- May 1, 2003 — License expired LIEXP

Address history

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

Seen Nov 7, 2004 → Sep 27, 2026 · 47 snapshots · as KO4AX
LEONARD BARON
1448 SW 13 PL, BOCA RATON, FL 33486
26.3475, -80.1148 (ZIP center) · Grid EL96wi · CQ 5 · ITU 8 · map ↗

Others requesting KO4AX

3 applications listed KO4AX as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
May 11, 2026	May 29, 2026	KR4MBC · Charles A Moore · Nashville, TN	3	Granted
Nov 25, 2022	Dec 13, 2022	KQ4ERQ · Devin M Johnson · Winterville, NC	1	Granted
Jul 8, 2020	Jul 26, 2020	KO4DGN · BRUCE BARKLEY · ACWORTH, GA	6	Dismissed

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KO4AX in the last 24 hours. They show up here within seconds of KO4AX beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.