N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 5, 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

Pio Majerski

FRN 0028724250 · first licensed Oct 28, 2019 as KN6FEK · 2 licenses on record

📝 FCC applications (2)

Received	File number	Service	Purpose	Status	Call
Nov 6, 2019	0008867245	HAM	Modification	Granted	KN6FEK
Oct 28, 2019	0008851948	HAM	New license	Granted	KN6FEK

Complete licensing history

K4PIO Active Technician · vanity Nov 26, 2019 → expires Nov 26, 2029

Licensee
Pio Majerski

Address
PO Box 600763
San Diego, CA 92160-0763

FRN
0028724250

Previous call
KN6FEK

Last granted
Nov 26, 2019

Effective
Nov 26, 2019

Last action
Nov 26, 2019
FCC actions (2)
- Nov 26, 2019 — Vanity call sign granted VANGRT
- Nov 26, 2019 — License issued LIISS
KN6FEK Canceled Technician Oct 28, 2019 → Nov 26, 2019 (canceled)

Licensee
Pio Majerski

Address
PO Box 600763
San Diego, CA 92160-0763

FRN
0028724250

Last granted
Oct 28, 2019

Effective
Oct 28, 2019

Last action
Nov 26, 2019
FCC actions (3)
- Nov 26, 2019 — License canceled LICAN
- Oct 28, 2019 — License issued LIISS
- Oct 28, 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 KN6FEK
Pio Majerski
PO Box 600763
San Diego, CA 92160-0763

Vanity applications

Filed · Award	Applicant	Requested (in order)	Status
Filed Nov 6, 2019 Granted Nov 26, 2019 0008867245	KN6FEK · Pio Majerski · Technician PO Box 600763 · San Diego, CA 92160-0763	1.K4PIO ✓ granted	Granted got K4PIO