N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 2026) · next update today 8:30 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

K4YYV HAM

✅ Available for a vanity request — free since May 11, 2017.

1x3 call: Technician, General, 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 · 1 holder on record · available since May 11, 2017

Previous holder: MATTHEW D KNAPP

Held K4YYV May 10, 2005 → May 10, 2015 · first licensed Sep 13, 2004 as KI4GYV · 3 licenses · FRN 0011509866

📦 Moved: Williston, SC → Charlotte, NC

K4YYV Expired General · vanity May 10, 2005 → May 10, 2015 (expired)

Licensee
MATTHEW D KNAPP

Address
7320 Cedarbrook Dr,
Charlotte, NC 28215
35.2456, -80.6989 (ZIP center) · Grid EM95pf · CQ 5 · ITU 8 · map ↗

FRN
0011509866

Previous call
KI4JUS (Technician)

Last granted
May 10, 2005

Effective
Nov 28, 2010

Last action
May 11, 2017
FCC actions (5)
- May 11, 2017 — License expired LIEXP
- Nov 28, 2010 — Administrative update LIAUA
- Aug 19, 2008 — Administrative update LIAUA
- May 10, 2005 — Vanity call sign granted VANGRT
- May 10, 2005 — License issued LIISS
KI4JUS Canceled General Sep 13, 2004 → May 10, 2005 (canceled)

Licensee
MATTHEW D KNAPP

Address
314 MOSELEY RD
WILLISTON, SC 29853
33.3992, -81.4318 (ZIP center) · Grid EM93gj · CQ 5 · ITU 8 · map ↗

FRN
0011509866

Previous call
KI4GYV (Technician)

Last granted
Sep 13, 2004

Effective
Apr 21, 2005

Last action
May 10, 2005
FCC actions (3)
- May 10, 2005 — License canceled LICAN
- Apr 21, 2005 — Systematic call sign granted SYSGRT
- Apr 21, 2005 — License issued LIISS
KI4GYV Canceled General Sep 13, 2004 → Apr 21, 2005 (canceled)

Licensee
MATTHEW D KNAPP

Address
314 MOSELEY RD
WILLISTON, SC 29853
33.3992, -81.4318 (ZIP center) · Grid EM93gj · CQ 5 · ITU 8 · map ↗

FRN
0011509866

Last granted
Sep 13, 2004

Effective
Apr 20, 2005

Last action
Apr 21, 2005
FCC actions (3)
- Apr 21, 2005 — License canceled LICAN
- Apr 20, 2005 — License modified LIMOD
- Sep 13, 2004 — License issued LIISS

Address history

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

Seen Oct 17, 2011 → Oct 4, 2026 · 46 snapshots · as K4YYV
MATTHEW D KNAPP
7320 Cedarbrook Dr,, Charlotte, NC 28215
35.2456, -80.6989 (ZIP center) · Grid EM95pf · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 95 snapshots · as KI4GYV
Matthew D Knapp
314 Moseley Rd, Williston, SC 29853
33.3992, -81.4318 (ZIP center) · Grid EM93gj · CQ 5 · ITU 8 · map ↗
Seen May 27, 2010 · 1 snapshot · as K4YYV
MATTHEW D KNAPP
1762 Lundee Dr, Aiken, SC 29803
33.4535, -81.7019 (ZIP center) · Grid EM93dk · CQ 5 · ITU 8 · map ↗

Others requesting K4YYV

2 applications listed K4YYV as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Apr 21, 2005	May 9, 2005	KI4JUS · MATTHEW D KNAPP · WILLISTON, SC	2	Granted
Mar 20, 2002	Apr 7, 2002	KG4RWF · Yesteryear Village Radio Club · Loxahatchee, FL	2	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for K4YYV in the last 24 hours. They show up here within seconds of K4YYV beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.