🕒 FCC license data updated today 9:42 am CDT (FCC files through Sep 30, 2026) · next update tomorrow 9:15 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
WP4DM
✅
Available for a vanity request — free since Feb 27, 2021.
2x2 call: Advanced and Amateur Extra licensees can request it.
No pending applications list it.
Not currently held
· 1 holder on record
· available since Feb 27, 2021
Previous holder: Delmer O Walker-Guzman
Held WP4DM Aug 3, 2004 → Feb 26, 2019
· first licensed Aug 3, 2004 as WP4DM
· 4 licenses · FRN 0011332509
KP4DW
Active
Amateur Extra · vanity
Apr 17, 2026 → expires Apr 17, 2036
Licensee Delmer O Walker-Guzman
Address COND CAROLINA COURT 1 CALLE INFANTE APT 5 CAROLINA, PR 00982-3502
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
FRN 0011332509
Previous call KP4OD (General)
Last granted Apr 17, 2026
Effective Apr 17, 2026
Last action Apr 17, 2026
FCC actions (2)
Apr 17, 2026 — Vanity call sign granted VANGRT Apr 17, 2026 — License issued LIISS
KP4OD
Canceled
Amateur Extra · vanity
Apr 26, 2019 → Apr 17, 2026 (canceled)
Licensee Delmer O Walker-Guzman
Address COND CAROLINA COURT 1 CALLE INFANTE APT 5 CAROLINA, PR 00982-3502
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
FRN 0011332509
Previous call KP4OMI (General)
Last granted Apr 26, 2019
Effective Jun 13, 2020
Last action Apr 17, 2026
FCC actions (4)
Apr 17, 2026 — License canceled LICAN Jun 13, 2020 — FCC action LIAUA Apr 26, 2019 — Vanity call sign granted VANGRT Apr 26, 2019 — License issued LIISS
KP4OMI
Canceled
Amateur Extra · vanity
Feb 26, 2019 → Apr 26, 2019 (canceled)
Licensee Delmer O Walker-Guzman
Address COND CAROLINA COURT APTS A-5 CALLE INFANTE CAROLINA, PR 00982
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
FRN 0011332509
Previous call WP4DM (General)
Last granted Feb 26, 2019
Effective Apr 10, 2019
Last action Apr 26, 2019
FCC actions (4)
Apr 26, 2019 — License canceled LICAN Apr 10, 2019 — License modified LIMOD Feb 26, 2019 — Vanity call sign granted VANGRT Feb 26, 2019 — License issued LIISS
WP4DM
Canceled
General
Aug 3, 2004 → Feb 26, 2019 (canceled)
Licensee Delmer O Walker-Guzman
Address Cond Carolina Ct A-5 Calle Infante Carolina, PR 00982
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
FRN 0011332509
Last granted Dec 18, 2014
Effective Feb 6, 2019
Last action Feb 26, 2019
FCC actions (4)
Feb 26, 2019 — License canceled LICAN Feb 6, 2019 — License modified LIMOD Dec 18, 2014 — License renewed LIREN 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 Apr 16, 2022 → Sep 27, 2026 · 13 snapshots · as KP4OD
Delmer O Walker-Guzman
COND CAROLINA COURT 1 CALLE INFANTE APT 5, CAROLINA, PR 00982-3502
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
Seen May 6, 2019 → Sep 27, 2026 · 13 snapshots · as KP4OMI
Delmer O Walker-Guzman
COND CAROLINA COURT APTS A-5 CALLE INFANTE, CAROLINA, PR 00982
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
Seen May 6, 2019 → Sep 27, 2026 · 13 snapshots · as WP4DM
Delmer O Walker-Guzman
Cond Carolina Ct A-5 Calle Infante, Carolina, PR 00982
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
Seen May 6, 2019 · 1 snapshot · as KP4OD
Delmer O Walker-Guzman
COND CAROLINA COURT APTS A-5 INFANTE ST, CAROLINA, PR 00982
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
Seen Mar 28, 2015 → Jan 22, 2019 · 22 snapshots · as WP4DM
Delmer O Walker-Guzman
COND CAROLINA COURT APTS APT A-5 INFANTE ST, Carolina, PR 00982
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
Seen Nov 7, 2004 → May 22, 2014 · 12 snapshots · as WP4DM
Delmer O Walker-Guzman
Carolina Cts Apts Apt A-5, Carolina, PR 00982
18.4087, -65.9913 (ZIP center) · Grid
FK78aj · CQ 8 · ITU 11 ·
map ↗
Others requesting WP4DM
2 applications listed WP4DM as a choice, newest first.
Data: FCC Universal Licensing System, amateur service · refreshed nightly
n9tpb.com · 73 de N9TPB