N9TPB FCC License Search

🕒 FCC license data updated today 8:30 am CDT (FCC files through Oct 1, 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

KP4MT HAM

✅ Available for a vanity request — free since Aug 20, 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 · 2 holders on record · available since Aug 20, 2026

Previous holder: MIRIAM RODRIGUEZ SANTIAGO

Held KP4MT Aug 19, 2014 → Aug 19, 2024 · first licensed May 1, 2013 as WP4OSJ · 2 licenses · FRN 0022663470

KP4MT Expired Amateur Extra · vanity Aug 19, 2014 → Aug 19, 2024 (expired)

Licensee
MIRIAM RODRIGUEZ SANTIAGO

Address
PO Box 1313
MAYAGUEZ, PR 00681

FRN
0022663470

Previous call
WP4OSJ (General)

Last granted
Aug 19, 2014

Effective
Aug 19, 2014

Last action
Aug 21, 2026
FCC actions (3)
- Aug 21, 2026 — License expired LIEXP
- Aug 19, 2014 — Vanity call sign granted VANGRT
- Aug 19, 2014 — License issued LIISS
WP4OSJ Canceled Amateur Extra May 1, 2013 → Aug 19, 2014 (canceled)

Licensee
MIRIAM RODRIGUEZ SANTIAGO

Address
PO Box 1313
MAYAGUEZ, PR 00681-1313

FRN
0022663470

Last granted
May 1, 2013

Effective
Jul 29, 2014

Last action
Aug 19, 2014
FCC actions (6)
- Aug 19, 2014 — License canceled LICAN
- Jul 29, 2014 — License modified LIMOD
- Nov 20, 2013 — Administrative update LIAUA
- Sep 6, 2013 — License modified LIMOD
- May 1, 2013 — License issued LIISS
- May 1, 2013 — Systematic call sign granted SYSGRT

Address history

From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.

Seen Mar 28, 2014 → Sep 27, 2026 · 72 snapshots · as WP4OSJ
MIRIAM RODRIGUEZ SANTIAGO
PO Box 1313
MAYAGUEZ, PR 00681-1313
Seen Oct 22, 2013 · 1 snapshot · as WP4OSJ
MIRIAM RODRIGUEZ SANTIAGO
PO Box 1313
MAGAGUEZ, PR 00681-1313

Previous holder: WILLIAM BARRIEL

Held KP4MT Oct 28, 1998 → Oct 15, 2001 · first licensed Oct 28, 1998 as KP4MT · 1 license · no FRN on file (pre-2001 records)

KP4MT Canceled Amateur Extra Oct 28, 1998 → Oct 15, 2001 (canceled)

Licensee
WILLIAM BARRIEL

Address
CALLE 36 ZC28 RIVERVIEW
BAYAMON, PR 00961
18.4099, -66.1634 (ZIP center) · Grid FK68wj · CQ 8 · ITU 11 · map ↗

Last granted
Oct 28, 1998

Effective
Oct 28, 1998

Last action
Oct 16, 2001
FCC actions (2)
- Oct 16, 2001 — Record corrected COR
- Oct 16, 2001 — Record corrected COR

Address history

From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.

Seen Nov 7, 2004 → Sep 27, 2026 · 47 snapshots · as KP4MT
WILLIAM BARRIEL
CALLE 36 ZC28 RIVERVIEW, BAYAMON, PR 00961
18.4099, -66.1634 (ZIP center) · Grid FK68wj · CQ 8 · ITU 11 · map ↗

Others requesting KP4MT

4 applications listed KP4MT as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Jul 20, 2023	Aug 7, 2023	WP4SWZ · LUIS A TORRES ZAYAS · SANTA ISABEL, PR	17	Granted
Jul 30, 2014	Aug 17, 2014	WP4OSJ · MIRIAM RODRIGUEZ SANTIAGO · MAYAGUEZ, PR	1	Granted
Nov 4, 2013	Nov 22, 2013	WP4ORZ · ALVIN A NATAL · MANATI, PR	4	Dismissed
May 8, 2002	May 26, 2002	WP3JC · Miguel W Torres · Barceloneta, PR	2	Granted

📡 On the air: APRS, digital & WSPR spots

📤 Heard by others PSK Reporter

Heard by 2 stations (2 reports) · last 21 hr ago · CW · grid FK68ke

20m · 2

Farthest: K3GMQ, 1,600 miles on 20m CW (13 dB)

PSK Reporter map →