N9TPB
FCC License Search
🕒 FCC license data updated yesterday 6:02 am CDT (FCC files through Oct 2, 2026) · next update today 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, WIKD0SBL HAM
✅ Available for a vanity request — free since Jan 24, 2015.
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 Jan 24, 2015
Previous holder: Brett A Knudson
Held KD0SBL May 23, 2012 → Jan 23, 2013 · first licensed May 23, 2012 as KD0SBL · 2 licenses · FRN 0021788831
-
📦 Moved: Rosemount, MN → Sioux Falls, SD
- Licensee
- Brett A Knudson
- Address
- Attn: Brett Knudson
3916 N Potsdam Ave #394
Sioux Falls, SD 57104
- FRN
- 0021788831
- Previous call
- KD0SBL (General)
- Last granted
- Nov 22, 2022
- Effective
- Nov 22, 2022
- Last action
- Nov 22, 2022
FCC actions (7)
- Nov 22, 2022 — License renewed LIREN
- Jul 12, 2022 — Administrative update LIAUA
- Sep 23, 2014 — Administrative update LIAUA
- Feb 20, 2014 — License modified LIMOD
- Jun 18, 2013 — License modified LIMOD
- Jan 23, 2013 — Vanity call sign granted VANGRT
- Jan 23, 2013 — License issued LIISS
-
- Licensee
- Brett A Knudson
- Address
- 3832 Cardinal St W
Rosemount, MN 55068
- FRN
- 0021788831
- Last granted
- May 23, 2012
- Effective
- May 23, 2012
- Last action
- Jan 23, 2013
FCC actions (3)
- Jan 23, 2013 — License canceled LICAN
- May 23, 2012 — License issued LIISS
- May 23, 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 27, 2024 → Sep 27, 2026 · 11 snapshots · as N0BAK
Brett A Knudson
Attn: Brett Knudson
3916 N Potsdam Ave #394, Sioux Falls, SD 57104 - Seen May 28, 2012 → Sep 27, 2026 · 49 snapshots · as KD0SBL
Brett A Knudson
3832 Cardinal St W, Rosemount, MN 55068 - Seen Mar 28, 2015 → Apr 16, 2022 · 24 snapshots · as N0BAK
Brett A Knudson
Attn: Brett Knudson
3895 Cardinal Ct, Rosemount, MN 55068
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KD0SBL in the last 24 hours. They show up here within seconds of KD0SBL beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.