N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 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

KD0SKH HAM

✅ Available for a vanity request — free since Mar 1, 2019.

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 Mar 1, 2019

Previous holder: AMBER P HARRINGTON

Held KD0SKH Jul 5, 2012 → Feb 28, 2017 · first licensed Jul 5, 2012 as KD0SKH · 2 licenses · FRN 0021887807

KO0I Active Amateur Extra · vanity Feb 28, 2017 → expires Feb 28, 2027

Licensee
AMBER P HARRINGTON

Address
PO Box 19144
BOULDER, CO 80308

FRN
0021887807

Previous call
KD0SKH (General)

Last granted
Feb 28, 2017

Effective
Sep 10, 2020

Last action
Sep 10, 2020
FCC actions (4)
- Sep 10, 2020 — Administrative update LIAUA
- Jul 12, 2017 — Administrative update LIAUA
- Feb 28, 2017 — Vanity call sign granted VANGRT
- Feb 28, 2017 — License issued LIISS
KD0SKH Canceled Amateur Extra Jul 5, 2012 → Feb 28, 2017 (canceled)

Licensee
PATRICK J HARRINGTON

Address
2711 Mapleton Ave #3
BOULDER, CO 80304
40.0447, -105.2884 (ZIP center) · Grid DN70ib · CQ 4 · ITU 7 · map ↗

FRN
0021887807

Last granted
Jul 5, 2012

Effective
Aug 25, 2016

Last action
Feb 28, 2017
FCC actions (8)
- Feb 28, 2017 — License canceled LICAN
- Aug 25, 2016 — License modified LIMOD
- Aug 9, 2016 — Administrative update LIAUA
- Aug 14, 2014 — Administrative update LIAUA
- May 7, 2013 — License modified LIMOD
- Apr 19, 2013 — Administrative update LIAUA
- Jul 5, 2012 — License issued LIISS
- Jul 5, 2012 — 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 · 13 snapshots · as KO0I
AMBER P HARRINGTON
PO Box 19144
BOULDER, CO 80308
Seen Nov 4, 2016 → Oct 4, 2026 · 26 snapshots · as KD0SKH
PATRICK J HARRINGTON
2711 Mapleton Ave #3, BOULDER, CO 80304
40.0447, -105.2884 (ZIP center) · Grid DN70ib · CQ 4 · ITU 7 · map ↗
Seen Sep 5, 2017 → May 6, 2019 · 7 snapshots · as KO0I
PATRICK J HARRINGTON
PO Box 19144
BOULDER, CO 80308
Seen Mar 28, 2015 → Jun 30, 2016 · 11 snapshots · as KD0SKH
PATRICK J HARRINGTON
2850 E Aurora Ave Apt 204, BOULDER, CO 80303
39.9732, -105.2093 (ZIP center) · Grid DM79jx · CQ 4 · ITU 7 · map ↗
Seen Oct 22, 2013 → May 22, 2014 · 3 snapshots · as KD0SKH
PATRICK J HARRINGTON
2915 BASELINE RD APT 213, BOULDER, CO 80303
39.9732, -105.2093 (ZIP center) · Grid DM79jx · CQ 4 · ITU 7 · map ↗
Seen Jul 26, 2012 → Apr 12, 2013 · 4 snapshots · as KD0SKH
PATRICK J HARRINGTON
420 S DEPEW ST, LAKEWOOD, CO 80226
39.7101, -105.0921 (ZIP center) · Grid DM79kr · CQ 4 · ITU 7 · map ↗

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KD0SKH in the last 24 hours. They show up here within seconds of KD0SKH beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.