N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 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

N4XRF HAM

✅ Available for a vanity request — free since Apr 25, 2021.

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 · 2 holders on record · available since Apr 25, 2021

Previous holder: SOPHIA A KERSTING

Held N4XRF Apr 24, 2009 → Apr 24, 2019 · first licensed Oct 31, 2008 as KJ4HOR · 2 licenses · FRN 0018236901

N4XRF Expired Technician · vanity Apr 24, 2009 → Apr 24, 2019 (expired)

Licensee
SOPHIA A KERSTING

Address
Attn: Sophia A. Kersting
8512 N DEXTER AVE
TAMPA, FL 33604
28.0172, -82.4553 (ZIP center) · Grid EL88sa · CQ 5 · ITU 8 · map ↗

FRN
0018236901

Previous call
KJ4HOR

Last granted
Apr 24, 2009

Effective
Apr 24, 2009

Last action
Apr 27, 2021
FCC actions (3)
- Apr 27, 2021 — License expired LIEXP
- Apr 24, 2009 — Vanity call sign granted VANGRT
- Apr 24, 2009 — License issued LIISS
KJ4HOR Canceled Technician Oct 31, 2008 → Apr 24, 2009 (canceled)

Licensee
SOPHIA A KERSTING

Address
8512 N DEXTER AVE
TAMPA, FL 33604
28.0172, -82.4553 (ZIP center) · Grid EL88sa · CQ 5 · ITU 8 · map ↗

FRN
0018236901

Last granted
Oct 31, 2008

Effective
Oct 31, 2008

Last action
Apr 24, 2009
FCC actions (3)
- Apr 24, 2009 — License canceled LICAN
- Oct 31, 2008 — License issued LIISS
- Oct 31, 2008 — 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 · 94 snapshots · as KJ4HOR
SOPHIA A KERSTING
8512 N DEXTER AVE, TAMPA, FL 33604
28.0172, -82.4553 (ZIP center) · Grid EL88sa · CQ 5 · ITU 8 · map ↗

Previous holder: ROBERT J STEINHOFF

Held N4XRF Dec 26, 1989 → Dec 26, 1999 · first licensed Dec 26, 1989 as N4XRF · 1 license · no FRN on file (pre-2001 records)

N4XRF Expired Technician Plus Dec 26, 1989 → Dec 26, 1999 (expired)

Licensee
ROBERT J STEINHOFF

Address
450 NE 32 ST
BOCA RATON, FL 33431
26.3746, -80.1066 (ZIP center) · Grid EL96wi · CQ 5 · ITU 8 · map ↗

Previous call
KA2AMI (Novice)

Last granted
Dec 26, 1989

Effective
Dec 26, 1989

Last action
Mar 7, 2002
FCC actions (1)
- Mar 7, 2002 — License expired LIEXP

Address history

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

Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as N4XRF
ROBERT J STEINHOFF
450 NE 32 ST, BOCA RATON, FL 33431
26.3746, -80.1066 (ZIP center) · Grid EL96wi · CQ 5 · ITU 8 · map ↗

Others requesting N4XRF

3 applications listed N4XRF as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Apr 28, 2021	May 16, 2021	KO4PUL · Helen A Ford · Fletcher, NC	3	Granted
Apr 6, 2009	Apr 24, 2009	KJ4HOR · SOPHIA A KERSTING · TAMPA, FL	1	Granted
Feb 12, 2007	Mar 2, 2007	KC4YQU · RANDY D FLOYD · ALPHARETTA, GA	4	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for N4XRF in the last 24 hours. They show up here within seconds of N4XRF beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.