N9TPB
FCC License Search
🕒 FCC license data updated yesterday 9:42 am CDT (FCC files through Sep 30, 2026) · next update today 9:15 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, WIKC3AVO HAM
✅ Available for a vanity request — free since Aug 29, 2015.
2x3 call: any licensee can request it.
No pending applications list it.
Not currently held · 1 holder on record · available since Aug 29, 2015
Previous holder: Martin F Helmke
Held KC3AVO Jun 26, 2013 → Aug 28, 2013 · first licensed Jun 26, 2013 as KC3AVO · 3 licenses · FRN 0022760227
-
- Licensee
- Martin F Helmke
- Address
- 631 Trinity Dr
West Chester, PA 19382
- FRN
- 0022760227
- Previous call
- AB3TA (General)
- Last granted
- Mar 14, 2025
- Effective
- Mar 14, 2025
- Last action
- Mar 14, 2025
FCC actions (3)
- Mar 14, 2025 — License renewed LIREN
- Feb 7, 2015 — Vanity call sign granted VANGRT
- Feb 7, 2015 — License issued LIISS
-
- Licensee
- Martin F Helmke
- Address
- 631 Trinity Dr
West Chester, PA 19382
- FRN
- 0022760227
- Previous call
- KC3AVO (General)
- Last granted
- Jun 26, 2013
- Effective
- Aug 28, 2013
- Last action
- Feb 7, 2015
FCC actions (3)
- Feb 7, 2015 — License canceled LICAN
- Aug 28, 2013 — Systematic call sign granted SYSGRT
- Aug 28, 2013 — License issued LIISS
-
- Licensee
- Martin F Helmke
- Address
- 631 Trinity Dr
West Chester, PA 19382
- FRN
- 0022760227
- Last granted
- Jun 26, 2013
- Effective
- Aug 28, 2013
- Last action
- Aug 28, 2013
FCC actions (4)
- Aug 28, 2013 — License canceled LICAN
- Aug 7, 2013 — License modified LIMOD
- Jun 26, 2013 — License issued LIISS
- Jun 26, 2013 — 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 Oct 22, 2013 → Sep 27, 2026 · 111 snapshots · as KC3AVO
Martin F Helmke
631 Trinity Dr, West Chester, PA 19382
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KC3AVO in the last 24 hours. They show up here within seconds of KC3AVO beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.