N9TPB
FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 14, 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)KO6BU HAM
✅ Available for a vanity request — free since May 18, 2026.
2x2 call: Advanced and Amateur Extra licensees 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 · available since May 18, 2026
Previous holder: George W Roos
Held KO6BU May 17, 1994 → May 17, 2024 · first licensed Oct 8, 1991 as KC6QIF · 1 license · FRN 0003591351
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- Licensee
- George W Roos
- Address
- 10726 Vista Valle Dr
San Diego, CA 92131-1231
- FRN
- 0003591351
- Previous call
- KC6QIF (Advanced)
- Last granted
- Mar 18, 2014
- Effective
- Mar 18, 2014
- Last action
- May 19, 2026
FCC actions (3)
- May 19, 2026 — License expired LIEXP
- Mar 18, 2014 — License renewed LIREN
- Apr 22, 2000 — License modified LIMOD
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.
- Seen May 2, 2000 → Apr 17, 2003 · 7 discs
KO6BU · Amateur Extra · issued Apr 22, 2000, expires May 17, 2004 · previously KC6QIF
GEORGE W. ROOS .
10726 VISTA VALLE DR, SAN DIEGO, CA 92131-1231 - Seen Oct 31, 1994 → Oct 8, 1999 · 10 discs
KO6BU · Advanced · issued May 17, 1994, expires May 17, 2004 · previously KC6QIF (General)
GEORGE W. ROOS
10726 VISTA VALLE DR, SAN DIEGO, CA 92131 - Seen Sep 9, 1993 → May 3, 1994 · 2 discs
KC6QIF · General · issued Oct 8, 1991, expires Oct 8, 2001
GEORGE W ROOS
10726 VISTA VALLE DR, SAN DIEGO, CA 92131
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
- Seen Nov 7, 2004 → Oct 11, 2026 · 49 snapshots · as KO6BU
George W Roos
10726 Vista Valle Dr, San Diego, CA 92131-1231
KO6BU 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.
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for KO6BU in the last 24 hours. They show up here within seconds of KO6BU beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.