N9TPB FCC License Search

🕒 FCC license data updated yesterday 8:30 am CDT (FCC files through Oct 1, 2026) · next update today 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

KP4DAV HAM

✅ Available for a vanity request — free since Jun 18, 2021.

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 Jun 18, 2021

Previous holder: DAVID RIVERA DIAZ

Held KP4DAV Jan 16, 2009 → Jun 17, 2019 · first licensed as WP4LTH · 2 licenses · FRN 0018858688

📦 Moved: , None → Naguabo, PR

KP4DAV Expired Technician · vanity Jan 16, 2009 → Jun 17, 2019 (expired)

Licensee
DAVID RIVERA DIAZ

Address
HC 1 BOX 4881-12
NAGUABO, PR 00718
18.2320, -65.7560 (ZIP center) · Grid FK78cf · CQ 8 · ITU 11 · map ↗

FRN
0018858688

Previous call
WP4LTH (Technician Plus)

Last granted
Jun 17, 2009

Effective
Jun 17, 2009

Last action
Jun 18, 2021
FCC actions (4)
- Jun 18, 2021 — License expired LIEXP
- Jun 17, 2009 — License renewed LIREN
- Jun 16, 2009 — FCC action ESCFRN
- Jan 16, 2009 — Authorization printed AUTHPR
WP4LTH Canceled Technician Plus → May 12, 1999 (canceled)

Licensee
DAVID RIVERA DIAZ

Address

Last granted

Effective

Last action

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 WP4LTH
DAVID RIVERA DIAZ
Seen Nov 7, 2004 → Sep 27, 2026 · 47 snapshots · as KP4DAV
DAVID RIVERA DIAZ
HC 1 BOX 4881-12, NAGUABO, PR 00718
18.2320, -65.7560 (ZIP center) · Grid FK78cf · CQ 8 · ITU 11 · map ↗

Others requesting KP4DAV

4 applications listed KP4DAV as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Aug 19, 2025	Sep 6, 2025	KQ4ZUA · David L Parker · Boiling Springs, SC	6	Granted
Mar 19, 2018	Apr 6, 2018	KN4FYJ · David R Mason · Clarksville, TN	3	Granted
Mar 21, 2002	Apr 8, 2002	WP3KK · Juan D Arroyo Velez · San German, PR	5	Granted
Feb 11, 2000	Feb 29, 2000	KE4DCH · ANGEL R VAZQUEZ SR · VRB BAYVIEW CATANO, PR	18	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KP4DAV in the last 24 hours. They show up here within seconds of KP4DAV beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.