N9TPB FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 1, 2026) · next update today 8:30 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

WB3CDT HAM

✅ Available for a vanity request — free since Apr 14, 2006.
2x3 call: any licensee can request it. No pending applications list it.

Not currently held · 1 holder on record · available since Apr 14, 2006

Previous holder: RONALD J CZAK

Held WB3CDT Jul 23, 1997 → Apr 13, 2004 · first licensed Jul 23, 1997 as WB3CDT · 2 licenses · FRN 0010640290

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 WB3CDT in the last 24 hours. They show up here within seconds of WB3CDT beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.