🕒 FCC license data updated today 7:15 am CST (FCC files through Nov 3, 2026) · next update tomorrow 6:00 am CST
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)
KD9ZON HAM
✅ Available for a vanity request — free since Apr 10, 2026.
2x3 call: any licensee can request it.
No pending applications list it.
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.
Seen May 2, 2000 → Apr 17, 2003 · 7 discs N9IYN
· Advanced · issued Jan 13, 2000, expires Apr 10, 2010
· previously KB9CEZ
RANDEL R. OLDENBERG
1367 LAKEVIEW DR, MOSINEE, WI 54455
Seen Sep 9, 1993 → Oct 8, 1999 · 12 discs N9IYN
· Advanced · issued Apr 10, 1990, expires Apr 10, 2000
· previously KB9CEZ(General)
RANDEL R. OLDENBERG
1367 LAKEVIEW DR, MOSINEE, WI 54455
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Apr 27, 2024 → Nov 1, 2026 · 32 snapshots · as KD9ZON
Randel R Oldenberg
214758 Kenny Dr, Mosinee, WI 54455
No APRS positions, PSK Reporter reports or WSPR spots for KD9ZON in the last 24 hours. They show up here within seconds of KD9ZON beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.