🕒 FCC license data updated yesterday 9:45 am CDT · next update today 7:15 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
WP4IOC HAM
✅
Available for a vanity request — free since Apr 30, 2007.
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 Apr 30, 2007
Previous holder: MILTON B MARRERO
Held WP4IOC Nov 5, 1999 → Apr 29, 2005
· first licensed May 30, 1989 as WP4VW
· 3 licenses · FRN 0001837079
📦 Moved: Corozal, PR → Shenandoah, TX
WP4VW
Active
General · vanity
Apr 29, 2005 → expires Sep 13, 2036
Licensee MILTON B MARRERO
Address Attn: SFC(R) Milton Marrero 9849 Pearly Everlasting Shenandoah, TX 77385
30.1946, -95.4400 (street) · Grid
EM20ge · CQ 4 · ITU 7 ·
map ↗
FRN 0001837079
Previous call WP4IOC (Technician)
Last granted Jul 29, 2026
Effective Jul 29, 2026
Last action Jul 29, 2026
FCC actions (10)
Jul 29, 2026 — License renewed LIREN Feb 19, 2026 — Administrative update LIAUA Jan 16, 2026 — Administrative update LIAUA Nov 20, 2024 — License modified LIMOD Sep 7, 2022 — Administrative update LIAUA Feb 24, 2022 — Administrative update LIAUA Sep 13, 2016 — License renewed LIREN Sep 12, 2016 — FCC action ESUFRN Apr 29, 2005 — Vanity call sign granted VANGRT Apr 29, 2005 — License issued LIISS
📦 Moved: Trujillo Alto, PR → Corozal, PR
WP4IOC
Canceled
Technician Plus
Nov 5, 1999 → Apr 29, 2005 (canceled)
Licensee MILTON B MARRERO
Address PO Box 347 Corozal, PR 00783
18.3002, -66.3289 (ZIP center) · Grid
FK68uh · CQ 8 · ITU 11 ·
map ↗
FRN 0001837079
Last granted Nov 5, 1999
Effective May 30, 2002
Last action Apr 29, 2005
FCC actions (6)
Apr 29, 2005 — License canceled LICAN May 30, 2002 — Administrative update LIAUA Jan 4, 2000 — License modified LIMOD Dec 9, 1999 — License modified LIMOD Nov 6, 1999 — License modified LIMOD Nov 5, 1999 — License renewed LIREN
WP4VW
Expired
Technician Plus
May 30, 1989 → May 30, 1999 (expired)
Licensee CARMEN E ABREO DIAZ
Address CALLE D OESTE 0-4 CIUDAD UNV TRUJILLO ALTO, PR 00720
18.2166, -66.4237 (ZIP center) · Grid
FK68sf · CQ 8 · ITU 11 ·
map ↗
FRN 0001837079
Last granted May 30, 1989
Effective May 30, 1989
Last action Sep 11, 2016
FCC actions (1)
May 31, 2001 — License expired LIEXP
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Sep 27, 2026 → Oct 4, 2026 · 2 snapshots · as WP4VW
MILTON B MARRERO
Attn: SFC(R) Milton Marrero 9849 Pearly Everlasting, Shenandoah, TX 77385
30.1946, -95.4400 (street) · Grid
EM20ge · CQ 4 · ITU 7 ·
map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as WP4VW
CARMEN E ABREO DIAZ
CALLE D OESTE 0-4 CIUDAD UNV, TRUJILLO ALTO, PR 00720
18.2166, -66.4237 (ZIP center) · Grid
FK68sf · CQ 8 · ITU 11 ·
map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 60 snapshots · as WP4IOC
MILTON B MARRERO
PO Box 347, Corozal, PR 00783
18.3002, -66.3289 (ZIP center) · Grid
FK68uh · CQ 8 · ITU 11 ·
map ↗
Seen Apr 27, 2024 → Sep 25, 2025 · 10 snapshots · as WP4VW
MILTON B MARRERO
PO Box 347 Corozal, PR 00783
18.3002, -66.3289 (ZIP center) · Grid
FK68uh · CQ 8 · ITU 11 ·
map ↗
Seen Apr 16, 2022 · 1 snapshot · as WP4VW
MILTON B MARRERO
16863 Accolade Way, Conroe, TX 77385
30.1867, -95.4290 (ZIP center) · Grid
EM20ge · CQ 4 · ITU 7 ·
map ↗
Seen May 27, 2010 → Jun 30, 2016 · 22 snapshots · as WP4VW
MILTON B MARRERO
HC01 BOX 18557, AGUADILLA, PR 00603
18.4574, -67.1249 (ZIP center) · Grid
FK68kk · CQ 8 · ITU 11 ·
map ↗
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for WP4IOC in the last 24 hours. They show up here within seconds of WP4IOC beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.
Data: FCC Universal Licensing System (amateur & GMRS), NetLogger and more · site status
n9tpb.com · 73 de N9TPB