N9TPB FCC License Search

🕒 FCC license data updated today 6:02 am CDT (FCC files through Oct 2, 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

K3SER HAM

✅ Available for a vanity request — free since Feb 11, 2025.

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 · 1 holder on record · available since Feb 11, 2025

Previous holder: Solomon E Rubin

Held K3SER Apr 26, 2022 → Feb 10, 2023 · first licensed Apr 7, 2022 as KN6TPL · 3 licenses · FRN 0032143992

📦 Moved: Arlington, VA → Washington, DC

W1SER Active Technician · vanity Feb 10, 2023 → expires Feb 10, 2033

Licensee
Solomon E Rubin

Address
112 15th st se
Washington, DC 20003
38.8885, -76.9836 (street) · Grid FM18mv · CQ 5 · ITU 8 · map ↗

FRN
0032143992

Previous call
K3SER

Last granted
Feb 10, 2023

Effective
Sep 1, 2026

Last action
Sep 1, 2026
FCC actions (3)
- Sep 1, 2026 — Administrative update LIAUA
- Feb 10, 2023 — Vanity call sign granted VANGRT
- Feb 10, 2023 — License issued LIISS
📦 Moved: San Francisco, CA → Arlington, VA

K3SER Canceled Technician · vanity Apr 26, 2022 → Feb 10, 2023 (canceled)

Licensee
Solomon E Rubin

Address
4141 N Henderon Rd apt 1006
Arlington, VA 22203
38.8738, -77.1164 (ZIP center) · Grid FM18ku · CQ 5 · ITU 8 · map ↗

FRN
0032143992

Previous call
KN6TPL

Last granted
Apr 26, 2022

Effective
Jun 22, 2022

Last action
Feb 10, 2023
FCC actions (4)
- Feb 10, 2023 — License canceled LICAN
- Jun 22, 2022 — Administrative update LIAUA
- Apr 26, 2022 — Vanity call sign granted VANGRT
- Apr 26, 2022 — License issued LIISS
KN6TPL Canceled Technician Apr 7, 2022 → Apr 26, 2022 (canceled)

Licensee
Solomon E Rubin

Address
1743 Union St
San Francisco, CA 94123
37.8020, -122.4340 (ZIP center) · Grid CM87st · CQ 3 · ITU 6 · map ↗

FRN
0032143992

Last granted
Apr 7, 2022

Effective
Apr 7, 2022

Last action
Apr 26, 2022
FCC actions (3)
- Apr 26, 2022 — License canceled LICAN
- Apr 7, 2022 — License issued LIISS
- Apr 7, 2022 — 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 Sep 27, 2026 · 1 snapshot · as W1SER
Solomon E Rubin
112 15th st se, Washington, DC 20003
38.8885, -76.9836 (street) · Grid FM18mv · CQ 5 · ITU 8 · map ↗
Seen Apr 27, 2024 → Sep 27, 2026 · 21 snapshots · as K3SER
Solomon E Rubin
4141 N Henderon Rd apt 1006, Arlington, VA 22203
38.8738, -77.1164 (ZIP center) · Grid FM18ku · CQ 5 · ITU 8 · map ↗
Seen Apr 16, 2022 → Sep 27, 2026 · 12 snapshots · as KN6TPL
Solomon E Rubin
1743 Union St, San Francisco, CA 94123
37.8020, -122.4340 (ZIP center) · Grid CM87st · CQ 3 · ITU 6 · map ↗

Others requesting K3SER

3 applications listed K3SER as a choice, newest first.

Filed	Award	Applicant	Choice #	Status
Apr 8, 2022	Apr 26, 2022	KN6TPL · Solomon E Rubin · San Francisco, CA	1	Granted
Feb 9, 2015	Feb 27, 2015	KK4VZA · Stephen E Redmond · Smiths, AL	5	Granted
Oct 16, 2014	Nov 3, 2014	KM4EMI · Scott E Russell · Jacksonville, FL	2	Granted

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for K3SER in the last 24 hours. They show up here within seconds of K3SER beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.