N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 2026) · next update today 9:45 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

KC4CBO HAM

✅ Available for a vanity request — free since May 18, 2013.

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 May 18, 2013

Previous holder: LUIS M KNIPPING

Held KC4CBO Aug 17, 1999 → May 17, 2011 · first licensed Aug 17, 1999 as KC4CBO · 2 licenses · FRN 0018232231

AK4IM Active Amateur Extra May 17, 2011 → expires Jan 25, 2029

Licensee
LUIS M KNIPPING

Address
3520 SW 12TH ST
MIAMI, FL 33135
25.7610, -80.2522 (street) · Grid EL95us · CQ 5 · ITU 8 · map ↗

FRN
0018232231

Previous call
KC4CBO (Advanced)

Last granted
Oct 30, 2018

Effective
Feb 19, 2020

Last action
Feb 19, 2020
FCC actions (5)
- Feb 19, 2020 — Administrative update LIAUA
- Oct 30, 2018 — License renewed LIREN
- Oct 29, 2018 — Administrative update LIAUA
- May 17, 2011 — Systematic call sign granted SYSGRT
- May 17, 2011 — License issued LIISS
KC4CBO Canceled Amateur Extra Aug 17, 1999 → May 17, 2011 (canceled)

Licensee
LUIS M KNIPPING

Address
3520 SW 12 ST
MIAMI, FL 33135
25.7666, -80.2350 (ZIP center) · Grid EL95vs · CQ 5 · ITU 8 · map ↗

FRN
0018232231

Last granted
Oct 30, 2008

Effective
Oct 30, 2008

Last action
May 17, 2011
FCC actions (8)
- May 17, 2011 — License canceled LICAN
- Oct 31, 2008 — FCC action LTSFND
- Oct 30, 2008 — License renewed LIREN
- Oct 30, 2008 — FCC action LITIN
- Sep 20, 1999 — Authorization printed AUTHPR
- Sep 15, 1999 — Authorization printed AUTHPR
- Sep 13, 1999 — FCC action INTDUP
- Aug 17, 1999 — License modified LIMOD

Address history

From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.

Seen Jan 22, 2019 → Oct 4, 2026 · 15 snapshots · as AK4IM
LUIS M KNIPPING
3520 SW 12TH ST, MIAMI, FL 33135
25.7610, -80.2522 (street) · Grid EL95us · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 → Oct 4, 2026 · 79 snapshots · as KC4CBO
LUIS M KNIPPING
3520 SW 12 ST, MIAMI, FL 33135
25.7666, -80.2350 (ZIP center) · Grid EL95vs · CQ 5 · ITU 8 · map ↗

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for KC4CBO in the last 24 hours. They show up here within seconds of KC4CBO beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.