N9TPB
FCC License Search
🕒 FCC license data updated yesterday 9:42 am CDT (FCC files through Sep 30, 2026) · next update today 6:00 am CDT
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HAMs within 5 miles of N9TPB · Extra class operators in Madison, WI · or try N9TPB · K9* wildcards · Smith, John · 0004797601 (FRN) · 53703 · Madison, WIKO4PIY HAM
✅ Available for a vanity request — free since May 30, 2023.
2x3 call: any licensee can request it.
No pending applications list it.
Not currently held · 1 holder on record · available since May 30, 2023
Previous holder: Baiyi Cai
Held KO4PIY Apr 12, 2021 → May 29, 2021 · first licensed Apr 12, 2021 as KO4PIY · 2 licenses · FRN 0030788616
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- Licensee
- Baiyi Cai
- Address
- 845 19TH ST S RM 869
Birmingham, AL 35205-3701
- FRN
- 0030788616
- Previous call
- KO4PIY (Technician)
- Last granted
- May 29, 2021
- Effective
- May 29, 2021
- Last action
- May 29, 2021
FCC actions (2)
- May 29, 2021 — Vanity call sign granted VANGRT
- May 29, 2021 — License issued LIISS
-
- Licensee
- Baiyi Cai
- Address
- 845 19TH ST S RM 869
Birmingham, AL 35205-3701
- FRN
- 0030788616
- Last granted
- Apr 12, 2021
- Effective
- May 19, 2021
- Last action
- May 29, 2021
FCC actions (4)
- May 29, 2021 — License canceled LICAN
- May 19, 2021 — License modified LIMOD
- Apr 12, 2021 — License issued LIISS
- Apr 12, 2021 — 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 16, 2022 → Sep 27, 2026 · 24 snapshots · as KO4PIY
Baiyi Cai
845 19TH ST S RM 869, Birmingham, AL 35205-3701
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KO4PIY in the last 24 hours. They show up here within seconds of KO4PIY beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.