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, WIKD9DZA HAM
✅ Available for a vanity request — free since Aug 12, 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 Aug 12, 2017
Previous holder: Walder Science Center ARC
Held KD9DZA May 28, 2015 → Aug 11, 2015 · first licensed May 28, 2015 as KD9DZA · 2 licenses · FRN 0024636904
-
- Licensee
- Walder Science Center ARC
- Address
- Attn: SAMUEL D POLONETZKY
3050 W Touhy Ave
Chicago, IL 60645
- FRN
- 0024636904
- Previous call
- KD9DZA
- Trustee
- WB9RDE
- Last granted
- Jul 17, 2025
- Effective
- Jul 17, 2025
- Last action
- Jul 17, 2025
FCC actions (3)
- Jul 17, 2025 — License renewed LIREN
- Aug 11, 2015 — Vanity call sign granted VANGRT
- Aug 11, 2015 — License issued LIISS
-
- Licensee
- Walder Science Center ARC
- Address
- Attn: SAMUEL D POLONETZKY
3050 W Touhy Ave
Chicago, IL 60645
- FRN
- 0024636904
- Trustee
- WB9RDE
- Last granted
- May 28, 2015
- Effective
- May 29, 2015
- Last action
- Aug 11, 2015
FCC actions (4)
- Aug 11, 2015 — License canceled LICAN
- May 29, 2015 — Administrative update LIAUA
- May 28, 2015 — License issued LIISS
- May 28, 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 Jun 6, 2015 → Oct 4, 2026 · 66 snapshots · as KD9DZA
Walder Science Center ARC
Attn: SAMUEL D POLONETZKY
3050 W Touhy Ave, Chicago, IL 60645
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KD9DZA in the last 24 hours. They show up here within seconds of KD9DZA beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.