N9TPB
FCC License Search
🕒 FCC license data updated yesterday 8:30 am CDT (FCC files through Oct 1, 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, WIKI6YRK HAM
✅ Available for a vanity request — free since Jul 1, 2011.
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 Jul 1, 2011
Previous holder: CESAR A CASTILLO
Held KI6YRK Apr 23, 2009 → Jun 30, 2009 · first licensed Apr 23, 2009 as KI6YRK · 2 licenses · FRN 0018719724
-
- Licensee
- CESAR A CASTILLO
- Address
- Attn: Cesar A. Castillo
1149 Saint Francis St
REDWOOD CITY, CA 94061
- FRN
- 0018719724
- Previous call
- KI6YRK
- Last granted
- May 7, 2019
- Effective
- Jan 29, 2026
- Last action
- Jan 29, 2026
FCC actions (4)
- Jan 29, 2026 — Administrative update LIAUA
- May 7, 2019 — License renewed LIREN
- Jun 30, 2009 — Vanity call sign granted VANGRT
- Jun 30, 2009 — License issued LIISS
-
- Licensee
- CESAR A CASTILLO JR
- Address
- 528 LUCERNE AVE
REDWOOD CITY, CA 94061
- FRN
- 0018719724
- Last granted
- Apr 23, 2009
- Effective
- Apr 23, 2009
- Last action
- Jun 30, 2009
FCC actions (3)
- Jun 30, 2009 — License canceled LICAN
- Apr 23, 2009 — License issued LIISS
- Apr 23, 2009 — 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 Sep 27, 2026 · 1 snapshot · as K6MEX
CESAR A CASTILLO
Attn: Cesar A. Castillo
1149 Saint Francis St, REDWOOD CITY, CA 94061 - Seen May 27, 2010 → Sep 27, 2026 · 80 snapshots · as KI6YRK
CESAR A CASTILLO JR
528 LUCERNE AVE, REDWOOD CITY, CA 94061 - Seen Apr 16, 2022 → Sep 25, 2025 · 11 snapshots · as K6MEX
CESAR A CASTILLO JR
Attn: Cesar A. Castillo
1410 Hudson St #6, REDWOOD CITY, CA 94061
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KI6YRK in the last 24 hours. They show up here within seconds of KI6YRK beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.