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, WIKC1DLJ HAM
✅ Available for a vanity request — free since Apr 8, 2017.
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 Apr 8, 2017
Previous holder: Martin T Koszewski
Held KC1DLJ Mar 20, 2015 → Apr 7, 2015 · first licensed Mar 20, 2015 as KC1DLJ · 3 licenses · FRN 0024310922
-
- Licensee
- Martin T Koszewski
- Address
- Attn: Martin Koszewski
550 Liberty Street Apt 3204
Braintree, MA 02184
- FRN
- 0024310922
- Previous call
- K1MTK (Technician)
- Last granted
- Sep 11, 2026
- Effective
- Sep 11, 2026
- Last action
- Sep 11, 2026
FCC actions (4)
- Sep 11, 2026 — License renewed LIREN
- Feb 4, 2025 — Administrative update LIAUA
- Nov 4, 2016 — Vanity call sign granted VANGRT
- Nov 4, 2016 — License issued LIISS
-
- Licensee
- Martin T Koszewski
- Address
- 550 Liberty Street Apt 3204
Braintree, MA 02184
- FRN
- 0024310922
- Previous call
- KC1DLJ (Technician)
- Last granted
- Apr 7, 2015
- Effective
- Apr 16, 2015
- Last action
- Nov 4, 2016
FCC actions (4)
- Nov 4, 2016 — License canceled LICAN
- Apr 16, 2015 — License modified LIMOD
- Apr 7, 2015 — Vanity call sign granted VANGRT
- Apr 7, 2015 — License issued LIISS
-
- Licensee
- Martin T Koszewski
- Address
- 550 Liberty Street Apt 3204
Braintree, MA 02184
- FRN
- 0024310922
- Last granted
- Mar 20, 2015
- Effective
- Mar 20, 2015
- Last action
- Apr 7, 2015
FCC actions (3)
- Apr 7, 2015 — License canceled LICAN
- Mar 20, 2015 — License issued LIISS
- Mar 20, 2015 — 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 Mar 28, 2015 → Oct 4, 2026 · 95 snapshots · as KC1DLJ
Martin T Koszewski
550 Liberty Street Apt 3204, Braintree, MA 02184
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KC1DLJ in the last 24 hours. They show up here within seconds of KC1DLJ beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.