N9TPB
FCC License Search
🕒 FCC license data updated today 6:02 am CDT (FCC files through Oct 30, 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)KP4ABG HAM
✅ Available for a vanity request — free since Dec 18, 2009.
2x3 call: any licensee 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 Dec 18, 2009
Previous holder: Rafael R Martinez Umpierre
Held KP4ABG Dec 17, 1997 → Dec 17, 2007 · first licensed Dec 17, 1997 as KP4ABG · 1 license · FRN 0001843283
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- Licensee
- Rafael R Martinez Umpierre
- Address
- PO Box 13559
San Juan, PR 00908-3559
- FRN
- 0001843283
- Last granted
- Dec 17, 1997
- Effective
- Nov 5, 2001
- Last action
- Dec 18, 2009
FCC actions (2)
- Dec 18, 2009 — License expired LIEXP
- Nov 5, 2001 — 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 Apr 27, 2002 → Apr 17, 2003 · 3 discs
KP4ABG · General · issued Nov 5, 2001, expires Dec 17, 2007
RAFAEL R MARTINEZ UMPIERRE
PO BOX 13559, SAN JUAN, PR 00908-3559
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
- Seen Nov 7, 2004 → Oct 25, 2026 · 51 snapshots · as KP4ABG
Rafael R Martinez Umpierre
PO Box 13559
San Juan, PR 00908-3559
Earlier Holders
KP4ABG in the 1993–2003 Callbooks
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 Mar 9, 1998 → Nov 1, 2001 · 8 discs
KP4ABG · Technician Plus · issued Dec 17, 1997, expires Dec 17, 2007
RAFAEL R. MARTINEZ
PO BOX 13559, SAN JUAN, PR 00908-3559 - Seen Oct 31, 1994 → Apr 4, 1997 · 6 discs
KP4ABG · Technician Plus · issued Jun 9, 1987, expires Jun 9, 1997
RAFAEL R MARTINEZ
BOX 13559, SAN JUAN, PR 00908 - Seen Sep 9, 1993 → May 3, 1994 · 2 discs
KP4ABG · Technician · issued Jun 9, 1987, expires Jun 9, 1997
RAFAEL R MARTINEZ
BOX 13559, SAN JUAN, PR 00908
KP4ABG 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.
- 1978 → 1997 · 16 editions
KP4ABG · class T
Rafael R Martinez
Box 13559, San Juan 00908.
Winter 1978 p.959, Winter 1980 p.360, 1981 p.293, Winter 1982 p.370, Winter 1983 p.380, Winter 1984 p.393, Winter 1985 p.392, Winter 1986 p.389, Winter 1988 p.399, Winter 1989 p.400, Winter 1990 p.402, Winter 1991 p.430, 1992 p.445, 1993 p.476, 1994 p.499, 1997 p.565 - 1969 → 1970 · 2 editions
KP4ABG · class T
Rafael R Martinez
1605 Kings Ct, Santurce 00911
Summer 1969 p.647, Spring 1970 p.626 - 1966 · 1 edition
KP4ABG
R Afa .=:l R. Martlrje: Z
1005 Kjngs Court. Santurce
Spring 1966 p.563 - 1965 · 1 edition
KP4ABG
Rafael R. Martinez
160s Kings Court, . Santurce
Summer 1965 p.560 - None → 1964 · 4 editions
KP4ABG · class T
Rafael R Martinez
Box 13559, San Juan, PR 00908
None p.305, 1962 p.124, Summer 1963 p.584, Fall 1964 p.581
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for KP4ABG in the last 24 hours. They show up here within seconds of KP4ABG beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.