N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 5, 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

ROBERT L WARTBURG

FRN 0014606917 · first licensed Jan 30, 2006 as K0LLO · 1 license on record

📝 FCC applications (1)

Received	File number	Service	Purpose	Status	Call
Jan 30, 2006	0002465302	HAM	Renewal	Granted	K0LLO

Complete licensing history

K0LLO Canceled Amateur Extra Jan 30, 2006 → Apr 24, 2014 (canceled)

Licensee
ROBERT L WARTBURG

Address
1425 N HARWOOD ST
ORANGE, CA 92667

FRN
0014606917

Last granted
Jan 30, 2006

Effective
Jan 30, 2006

Last action
Feb 27, 2026
FCC actions (4)
- Mar 25, 2016 — Record corrected COR
- Mar 25, 2016 — Record corrected COR
- Jan 30, 2006 — License renewed LIREN
- Jan 30, 2006 — FCC action LITIN

Address history

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

Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as K0LLO
ROBERT L WARTBURG
1425 N HARWOOD ST, ORANGE, CA 92667