N9TPB FCC License Search

🕒 FCC license data updated today 9:42 am CDT (FCC files through Sep 30, 2026) · next update tomorrow 9:15 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

W9MSS

✅ Available for a vanity request — free since Dec 23, 2019.

1x3 call: Technician, General, Advanced and Amateur Extra licensees can request it. No pending applications list it.

📬 QSL: LoTW user, last upload Jan 7, 2018 · not eQSL AG

Not currently held · 2 holders on record · available since Dec 23, 2019

Previous holder: Maxwell S Schweiner

Held W9MSS Sep 13, 2013 → Dec 22, 2017 · first licensed Mar 1, 2013 as KC9YLG · 3 licenses · FRN 0022485908

W9QT Active Amateur Extra · vanity Dec 22, 2017 → expires Dec 22, 2027

Licensee
Maxwell S Schweiner

Address
4257 Beverly Rd
Madison, WI 53711
43.0369, -89.4472 (street) · Grid EN53ga · CQ 4 · ITU 8 · map ↗

FRN
0022485908

Previous call
W9MSS (General)

Last granted
Dec 22, 2017

Effective
Feb 25, 2021

Last action
Feb 25, 2021
FCC actions (4)
- Feb 25, 2021 — FCC action LIAUA
- Jul 11, 2019 — FCC action LIAUA
- Dec 22, 2017 — Vanity call sign granted VANGRT
- Dec 22, 2017 — License issued LIISS
W9MSS Canceled Amateur Extra · vanity Sep 13, 2013 → Dec 22, 2017 (canceled)

Licensee
Maxwell S Schweiner

Address
2525 University Ave Apt H
Madison, WI 53705
43.0740, -89.4605 (ZIP center) · Grid EN53gb · CQ 4 · ITU 8 · map ↗

FRN
0022485908

Previous call
KC9YLG (General)

Last granted
Sep 13, 2013

Effective
Oct 19, 2017

Last action
Dec 22, 2017
FCC actions (8)
- Dec 22, 2017 — License canceled LICAN
- Oct 19, 2017 — License modified LIMOD
- Jan 31, 2017 — FCC action LIAUA
- Jun 23, 2015 — FCC action LIAUA
- Sep 24, 2013 — FCC action LIAUA
- Sep 17, 2013 — License modified LIMOD
- Sep 13, 2013 — Vanity call sign granted VANGRT
- Sep 13, 2013 — License issued LIISS
KC9YLG Canceled Technician Mar 1, 2013 → Sep 13, 2013 (canceled)

Licensee
Maxwell S Schweiner

Address
1323 W Dayton St #701
Madison, WI 53715
43.0556, -89.3878 (ZIP center) · Grid EN53hb · CQ 4 · ITU 8 · map ↗

FRN
0022485908

Last granted
Mar 1, 2013

Effective
Aug 22, 2013

Last action
Sep 13, 2013
FCC actions (4)
- Sep 13, 2013 — License canceled LICAN
- Aug 22, 2013 — FCC action LIAUA
- Mar 1, 2013 — License issued LIISS
- Mar 1, 2013 — 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 → Sep 27, 2026 · 12 snapshots · as W9QT
Maxwell S Schweiner
4257 Beverly Rd, Madison, WI 53711
43.0369, -89.4472 (street) · Grid EN53ga · CQ 4 · ITU 8 · map ↗
Seen Feb 15, 2017 → Sep 27, 2026 · 26 snapshots · as W9MSS
Maxwell S Schweiner
2525 University Ave Apt H, Madison, WI 53705
43.0740, -89.4605 (ZIP center) · Grid EN53gb · CQ 4 · ITU 8 · map ↗
Seen Oct 22, 2013 → Sep 27, 2026 · 44 snapshots · as KC9YLG
Maxwell S Schweiner
1323 W Dayton St #701, Madison, WI 53715
43.0556, -89.3878 (ZIP center) · Grid EN53hb · CQ 4 · ITU 8 · map ↗
Seen Aug 2, 2015 → Dec 31, 2016 · 11 snapshots · as W9MSS
Maxwell S Schweiner
121 E Water St Apt 119, Appleton, WI 54911
44.2815, -88.3810 (ZIP center) · Grid EN54tg · CQ 4 · ITU 8 · map ↗
Seen Apr 6, 2013 → Apr 12, 2013 · 2 snapshots · as KC9YLG
Maxwell S Schweiner
2011 Emerald Drive, Green Bay, WI 54311
44.4803, -87.8921 (ZIP center) · Grid EN64bl · CQ 4 · ITU 8 · map ↗

Previous holder: Mark A Shamrock Sr

Held W9MSS Jun 5, 2009 → Apr 26, 2011 · first licensed Jun 17, 2008 as KJ4EUO · 3 licenses · FRN 0017872482

WR4A Active Amateur Extra · vanity Apr 26, 2011 → expires Apr 26, 2031

Licensee
Mark A Shamrock Sr

Address
4516 Sw 20th Pl
Cape Coral, FL 33914
26.5669, -82.0163 (street) · Grid EL86xn · CQ 5 · ITU 8 · map ↗

FRN
0017872482

Previous call
W9MSS (General)

Last granted
Feb 9, 2021

Effective
Feb 9, 2021

Last action
Feb 9, 2021
FCC actions (3)
- Feb 9, 2021 — License renewed LIREN
- Apr 26, 2011 — Vanity call sign granted VANGRT
- Apr 26, 2011 — License issued LIISS
W9MSS Canceled Amateur Extra · vanity Jun 5, 2009 → Apr 26, 2011 (canceled)

Licensee
Mark A Shamrock Sr

Address
4516 Sw 20th Pl
Cape Coral, FL 33914
26.5669, -82.0163 (street) · Grid EL86xn · CQ 5 · ITU 8 · map ↗

FRN
0017872482

Previous call
KJ4EUO (General)

Last granted
Jun 5, 2009

Effective
Sep 21, 2009

Last action
Apr 26, 2011
FCC actions (4)
- Apr 26, 2011 — License canceled LICAN
- Sep 21, 2009 — License modified LIMOD
- Jun 5, 2009 — Vanity call sign granted VANGRT
- Jun 5, 2009 — License issued LIISS
KJ4EUO Canceled General Jun 17, 2008 → Jun 5, 2009 (canceled)

Licensee
Mark A Shamrock Sr

Address
4516 Sw 20th Pl
Cape Coral, FL 33914
26.5669, -82.0163 (street) · Grid EL86xn · CQ 5 · ITU 8 · map ↗

FRN
0017872482

Last granted
Jun 17, 2008

Effective
Sep 16, 2008

Last action
Jun 5, 2009
FCC actions (4)
- Jun 5, 2009 — License canceled LICAN
- Sep 16, 2008 — License modified LIMOD
- Jun 17, 2008 — License issued LIISS
- Jun 17, 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 → Sep 27, 2026 · 137 snapshots · as KJ4EUO
Mark A Shamrock Sr
4516 Sw 20th Pl, Cape Coral, FL 33914
26.5669, -82.0163 (street) · Grid EL86xn · CQ 5 · ITU 8 · map ↗

Others requesting W9MSS

2 applications listed W9MSS as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Aug 26, 2013	Sep 13, 2013	KC9YLG · Maxwell S Schweiner · Madison, WI	1	Granted
May 18, 2009	Jun 5, 2009	KJ4EUO · Mark A Shamrock Sr · Cape Coral, FL	1	Granted