N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 13, 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)

W1SRO HAM

✅ Available for a vanity request — free since Sep 22, 2022.

1x3 call: Technician, General, Advanced and Amateur Extra licensees can request it. No pending applications list it.
Last requested Sep 1, 2010 as choice 1: granted.

📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH

Not currently held · 1 holder on record · available since Sep 22, 2022

Previous holder: Sean R O'Connor

Held W1SRO Sep 21, 2010 → Sep 21, 2020 · first licensed Mar 23, 2009 as KB3SMT · 3 licenses · FRN 0018623736

📦 Moved: Cambridge, MA → Chalfont, PA

W1SRO Expired General · vanity Sep 21, 2010 → Sep 21, 2020 (expired)

Licensee
Sean R O'Connor

Address
112 Richard Dr
Chalfont, PA 18914
40.2895, -75.2107 (ZIP center) · Grid FN20jg · CQ 5 · ITU 8 · map ↗

FRN
0018623736

Previous call
KB1UQY (Technician)

Last granted
Sep 21, 2010

Effective
Aug 13, 2019

Last action
Sep 22, 2022
FCC actions (5)
- Sep 22, 2022 — License expired LIEXP
- Aug 13, 2019 — Administrative update LIAUA
- Feb 24, 2015 — Administrative update LIAUA
- Sep 21, 2010 — Vanity call sign granted VANGRT
- Sep 21, 2010 — License issued LIISS
KB1UQY Canceled General Mar 23, 2009 → Sep 21, 2010 (canceled)

Licensee
Sean R O'Connor

Address
85 1/2 Winter Street Apt 2
Cambridge, MA 02141
42.3703, -71.0826 (ZIP center) · Grid FN42li · CQ 5 · ITU 8 · map ↗

FRN
0018623736

Previous call
KB3SMT (Technician)

Last granted
Mar 23, 2009

Effective
Aug 18, 2010

Last action
Sep 21, 2010
FCC actions (3)
- Sep 21, 2010 — License canceled LICAN
- Aug 18, 2010 — Systematic call sign granted SYSGRT
- Aug 18, 2010 — License issued LIISS
KB3SMT Canceled General Mar 23, 2009 → Aug 18, 2010 (canceled)

Licensee
Sean R O'Connor

Address
85 1/2 Winter Street Apt 2
Cambridge, MA 02141
42.3703, -71.0826 (ZIP center) · Grid FN42li · CQ 5 · ITU 8 · map ↗

FRN
0018623736

Last granted
Mar 23, 2009

Effective
Aug 10, 2010

Last action
Aug 18, 2010
FCC actions (5)
- Aug 18, 2010 — License canceled LICAN
- Aug 10, 2010 — Administrative update LIAUA
- Mar 22, 2010 — License modified LIMOD
- Mar 23, 2009 — License issued LIISS
- Mar 23, 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 Apr 16, 2022 → Oct 11, 2026 · 14 snapshots · as W1SRO
Sean R O'Connor
112 Richard Dr, Chalfont, PA 18914
40.2895, -75.2107 (ZIP center) · Grid FN20jg · CQ 5 · ITU 8 · map ↗
Seen Oct 17, 2011 → Oct 11, 2026 · 104 snapshots · as KB3SMT
Sean R O'Connor
85 1/2 Winter Street Apt 2, Cambridge, MA 02141
42.3703, -71.0826 (ZIP center) · Grid FN42li · CQ 5 · ITU 8 · map ↗
Seen Mar 28, 2015 → May 6, 2019 · 23 snapshots · as W1SRO
Sean R O'Connor
413 Commons Way, Doylestown, PA 18901
40.3048, -75.1508 (ZIP center) · Grid FN20kh · CQ 5 · ITU 8 · map ↗
Seen May 27, 2010 · 1 snapshot · as KB3SMT
Sean R O'Connor
5228 Cedar Ln Apt 146, Columbia, MD 21044
39.2053, -76.8787 (ZIP center) · Grid FM19ne · CQ 5 · ITU 8 · map ↗

W1SRO in the Printed Callbooks, 1909–1997

From scanned copies of the printed callbooks (government lists from 1913, then the Radio Amateur Callbook to 1997), read by OCR, so names and streets can carry typos. Each line is one or more editions in a row showing the same name at the same address.

1992 · 1 edition
W1SRO · class G
Doris Mmac Gown
Rfd I Box 421, Pittsfield, ME 04967
1992 p.192
1991 · 1 edition
W1SRO · class G
Doris M Mac Gown
Rfd I Box 411. Pittsfield, ME 04967
Winter 1991 p.188
1982 · 1 edition
W1SRO · class G
Glenn D Oberender
Rfd 1, Jewell, IA 50130
Winter 1982 p.86
1971 → 1980 · 3 editions
W1SRO · class G
Glenn D Oberender
Jewell 50130 Ia Wa•svy G Gerald W Knapp, Bex 76, Swatara · 55785 Mn Wa•szl 6 Francis J Harden, 1849 Cass Av, St Louis 63106 Mo Wa.tcs G Cecil E Goiter, Campbell 68932 Ne
Fall 1971 p.46, Winter 1974 p.47, Winter 1980 p.79
1961 · 1 edition
W1SRO
Frank Z. Grochal
Rfd 11 Easthampton Mass Wlsus Norman J. Graham, 4 Garoner St, Arlington 74 Mass
Fall 1961 p.91
1950 → 1956 · 5 editions
W1SRO
Edward W. Sanders
20 Florence Avenue, Norwood, MA
Summer 1950 p.40, Fall 1952 p.60, Fall 1953 p.60, Fall 1955 p.71, Spring 1956 p.55

Others Requesting W1SRO

1 application listed W1SRO as a choice, newest first.

Filed	Award	Applicant	Choice #	W1SRO	Result
Sep 1, 2010	Sep 19, 2010	KB1UQY · Sean R O'Connor · Cambridge, MA	1	Granted	Granted this call

📡 On the Air: APRS, Digital & WSPR Spots

No APRS positions, PSK Reporter reports or WSPR spots for W1SRO in the last 24 hours. They show up here within seconds of W1SRO beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.