N9TPB FCC License Search

🕒 FCC license data updated yesterday 9:45 am CDT · 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

KN4USB HAM

✅ Available for a vanity request — free since Jul 21, 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 Jul 21, 2021

Previous holder: Michael I Rosenberg

Held KN4USB May 22, 2019 → Jul 20, 2019 · first licensed May 22, 2019 as KN4USB · 2 licenses · FRN 0028489888

WW1CAT Active General · vanity Jul 20, 2019 → expires Jul 20, 2029

Licensee
Michael I Rosenberg

Address
7005 65th ST
Vero Beach, FL 32967
27.7119, -80.4700 (street) · Grid EL97sr · CQ 5 · ITU 8 · map ↗

FRN
0028489888

Previous call
KN4USB (Technician)

Last granted
Jul 20, 2019

Effective
Jul 20, 2019

Last action
Jul 20, 2019
FCC actions (2)
- Jul 20, 2019 — Vanity call sign granted VANGRT
- Jul 20, 2019 — License issued LIISS
KN4USB Canceled General May 22, 2019 → Jul 20, 2019 (canceled)

Licensee
Michael I Rosenberg

Address
7005 65th ST
Vero Beach, FL 32967
27.7119, -80.4700 (street) · Grid EL97sr · CQ 5 · ITU 8 · map ↗

FRN
0028489888

Last granted
May 22, 2019

Effective
Jun 25, 2019

Last action
Jul 20, 2019
FCC actions (6)
- Jul 20, 2019 — License canceled LICAN
- Jun 25, 2019 — License modified LIMOD
- May 25, 2019 — Administrative update LIAUA
- May 25, 2019 — Administrative update LIAUA
- May 22, 2019 — License issued LIISS
- May 22, 2019 — 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 Apr 16, 2022 → Oct 4, 2026 · 26 snapshots · as KN4USB
Michael I Rosenberg
7005 65th ST, Vero Beach, FL 32967
27.7119, -80.4700 (street) · Grid EL97sr · CQ 5 · ITU 8 · map ↗

Others requesting KN4USB

2 applications listed KN4USB as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Jul 10, 2025	Jul 28, 2025	KR4FCO · Stephanie R Clark · Madison, AL	2	Granted
Jun 3, 2019	Jun 21, 2019	KN4UPP · Scott A Buscher · Madison Heights, VA	1	Dismissed

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KN4USB in the last 24 hours. They show up here within seconds of KN4USB beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.