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

KO4NSU HAM

⏳ Not available yet — opens for vanity requests May 13, 2028, two years after the license was canceled (May 12, 2026).
2x3 call: any licensee 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

Previous holder: STEPHEN O McCLURE

Held KO4NSU Mar 8, 2021 → May 12, 2026 · first licensed Mar 8, 2021 as KO4NSU · 2 licenses · FRN 0030523898

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

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KO4NSU in the last 24 hours. They show up here within seconds of KO4NSU beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.