N9TPB
FCC License Search
🕒 FCC license data updated today 9:42 am CDT (FCC files through Sep 30, 2026) · next update tomorrow 9:15 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, WIKA4JDU HAM
✅ Available for a vanity request — free since Jun 4, 2002.
2x3 call: any licensee can request it.
No pending applications list it.
Not currently held · 1 holder on record · available since Jun 4, 2002
Previous holder: JOHN C FRENZEL
Held KA4JDU Oct 28, 1997 → Jun 3, 2000 · first licensed Oct 28, 1997 as KA4JDU · 2 licenses · FRN 0003164779
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📦 Moved: Sugar Lane, TX → Sugar Land, TX
- Licensee
- JOHN C FRENZEL
- Address
- 4831 KENESHAW ST
SUGAR LAND, TX 77479
- FRN
- 0003164779
- Previous call
- KA4JDU (Advanced)
- Last granted
- Mar 18, 2020
- Effective
- Mar 18, 2020
- Last action
- Mar 18, 2020
FCC actions (3)
- Mar 18, 2020 — License renewed LIREN
- Apr 2, 2010 — License renewed LIREN
- Jun 3, 2000 — License issued LIISS
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- Licensee
- JOHN C FRENZEL
- Address
- 4831 KENESHAW ST
SUGAR LANE, TX 77479
- FRN
- 0003164779
- Last granted
- Oct 28, 1997
- Effective
- May 16, 2000
- Last action
- Jun 3, 2000
FCC actions (2)
- Jun 3, 2000 — License canceled LICAN
- May 16, 2000 — License modified LIMOD
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KA4JDU in the last 24 hours. They show up here within seconds of KA4JDU beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.