N9TPB FCC License Search

🕒 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

KJ4KRT HAM

✅ Available for a vanity request — free since Apr 22, 2025.

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 22, 2025

Previous holder: Edward L Underfinger

Held KJ4KRT Mar 25, 2009 → Apr 21, 2023 · first licensed Mar 25, 2009 as KJ4KRT · 2 licenses · FRN 0018633123

AA0EU Active Amateur Extra · vanity Apr 21, 2023 → expires Apr 21, 2033

Licensee
Edward L Underfinger

Address
Attn: Edward Underfinger
1E Newcastle Dr
Fort Walton Beach, FL 32547
30.4414, -86.6239 (street) · Grid EM60qk · CQ 5 · ITU 8 · map ↗

FRN
0018633123

Previous call
KJ4KRT (General)

Last granted
Apr 21, 2023

Effective
Apr 21, 2023

Last action
Apr 21, 2023
FCC actions (2)
- Apr 21, 2023 — Vanity call sign granted VANGRT
- Apr 21, 2023 — License issued LIISS
KJ4KRT Canceled Amateur Extra Mar 25, 2009 → Apr 21, 2023 (canceled)

Licensee
Edward L Underfinger

Address
1E Newcastle Dr
Fort Walton Beach, FL 32547
30.4414, -86.6239 (street) · Grid EM60qk · CQ 5 · ITU 8 · map ↗

FRN
0018633123

Last granted
Feb 1, 2019

Effective
Feb 1, 2019

Last action
Apr 21, 2023
FCC actions (7)
- Apr 21, 2023 — License canceled LICAN
- Feb 1, 2019 — License renewed LIREN
- Sep 16, 2009 — License modified LIMOD
- May 23, 2009 — Administrative update LIAUA
- May 12, 2009 — License modified LIMOD
- Mar 25, 2009 — License issued LIISS
- Mar 25, 2009 — 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 May 27, 2010 → Oct 4, 2026 · 59 snapshots · as KJ4KRT
Edward L Underfinger
1E Newcastle Dr, Fort Walton Beach, FL 32547
30.4414, -86.6239 (street) · Grid EM60qk · CQ 5 · ITU 8 · map ↗

Others requesting KJ4KRT

1 application listed KJ4KRT as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
May 12, 2008	May 30, 2008	KJ4DQB · Karen Ratliff-Trotter · Maryville, TN	4	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KJ4KRT in the last 24 hours. They show up here within seconds of KJ4KRT beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.