N9TPB
FCC License Search
🕒 FCC license data updated today 6:02 am CDT (FCC files through Oct 16, 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)WP4DU HAM
✅ Available for a vanity request — free since Aug 4, 2016.
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 · 2 holders on record · available since Aug 4, 2016
Previous holder: Jayson J Cruz-Rivera
Held WP4DU Aug 3, 2004 → Aug 3, 2014 · first licensed Aug 3, 2004 as WP4DU · 1 license · FRN 0011332525
-
- Licensee
- Jayson J Cruz-Rivera
- Address
- PO Box 1436
Hatillo, PR 00659
- FRN
- 0011332525
- Last granted
- Aug 3, 2004
- Effective
- Aug 3, 2004
- Last action
- Aug 4, 2016
FCC actions (2)
- Aug 4, 2016 — License expired LIEXP
- Aug 3, 2004 — License issued LIISS
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 WP4DU
Jayson J Cruz-Rivera
PO Box 1436
Hatillo, PR 00659
Previous holder: RAFAEL HERNANDEZ
Held WP4DU Sep 1, 1987 → Sep 1, 1997 · first licensed Sep 1, 1987 as WP4DU · 1 license · no FRN on file (pre-2001 records)
-
- Licensee
- RAFAEL HERNANDEZ
- Address
- PO Box 8735
HUMACA, PR 00661
- Previous call
- WP4GFU (Technician)
- Last granted
- Sep 1, 1987
- Effective
- Sep 1, 1987
- Last action
- Sep 2, 1999
FCC actions (1)
- Sep 2, 1999 — License expired LIEXP
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 Mar 9, 1998 → Apr 7, 1999 · 3 discs
WP4DU · General · issued Sep 1, 1987, expires Sep 1, 1997 · previously WP4GFU (Technician)
RAFAEL HERNANDEZ
PO BOX 8735, HUMACA, PR 00661 - Seen Sep 9, 1993 → Apr 4, 1997 · 8 discs
WP4DU · General · issued Sep 1, 1987, expires Sep 1, 1997 · previously WP4GFU (Technician)
RAFAEL HERNANDEZ
POB 8735, HUMACA, PR 00661
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 WP4DU
RAFAEL HERNANDEZ
PO Box 8735
HUMACA, PR 00661
WP4DU 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.
- 1997 · 1 edition
WP4DU · class G
Rafael Hernandez
Pob 8735, Humaca, PR 00661
1997 p.621 - 1996 · 1 edition
WP4DU · class X
N ~:~: Jimenez Plumey
Uzon 4095 Bo Naranjlto
1996 p.604 - 1994 → 1995 · 2 editions
WP4DU · class G
Rafael Hernandez
Pob 8735, Humaca, PR 00661
1994 p.550, 1995 p.612 - 1993 · 1 edition
WP4DU · class N
Joaquin Nieves Soto
Sector La Charea R 3 Buzon 63
1993 p.521 - 1991 → 1992 · 2 editions
WP4DU · class G
Rafael Hernandez
Pob 8735, Humaca, PR 00661
Winter 1991 p.469, 1992 p.490 - 1989 · 1 edition
WP4DU · class N
Roberto M Aleman Jr
Park Plaza 1105 Isla Verde
Winter 1989 p.439 - 1988 · 1 edition
WP4DU · class T
Francisco I Martinez
Pob 818, Coamo Pr, 00640
Winter 1988 p.437 - 1971 · 1 edition
WP4DU · class N
Bernard A Shepard Jr
Box 42, Halo Rey
Winter 1971 p.664
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for WP4DU in the last 24 hours. They show up here within seconds of WP4DU beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.