N9TPB FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 19, 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)

KA1UDH HAM

✅ Available for a vanity request — free since Jun 14, 2001.
2x3 call: any licensee can request it. No pending applications list it.
Last requested Feb 3, 2010 as choice 4: not granted, that applicant got N1ETG instead.

📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH

Not currently held · 1 holder on record · available since Jun 14, 2001

Previous holder: ERNEST L CASTLE IV

Held KA1UDH Jun 13, 1989 → Jun 13, 1999 · first licensed Jun 13, 1989 as KA1UDH · 1 license · no FRN on file (pre-2001 records)

Callbook Records, 1993–2003
From the FCC amateur database as published on the QRZ! callsign CD-ROMs, 1993–2003, before and alongside the FCC's online records (which start in 1999). "Seen" dates are the first and last disc showing that record; the issue date is the FCC's, so it can be a renewal of an even older license.
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
KA1UDH in the Printed Callbooks, 1909–1997
From scanned copies of the printed callbooks (government lists from 1913, then the Radio Amateur Callbook to 1997), read by OCR, so names and streets can carry typos. Each line is one or more editions in a row showing the same name at the same address.

Others Requesting KA1UDH

1 application listed KA1UDH as a choice, newest first.

FiledAwardApplicantChoice #KA1UDHResult
Feb 3, 2010 Feb 21, 2010 KB1TQO · Ernest L Castle IV · Manchester, NH 4Not granted They got N1ETG (choice 1)

📡 On the Air: APRS, Digital & WSPR Spots

No APRS positions, PSK Reporter reports or WSPR spots for KA1UDH in the last 24 hours. They show up here within seconds of KA1UDH beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.