N9TPB
FCC License Search
🕒 FCC license data updated yesterday 6:02 am CDT (FCC files through Oct 2, 2026) · next update today 7:15 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, WIKJ6APO HAM
✅ Available for a vanity request — free since Feb 14, 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 Feb 14, 2017
Previous holder: Sherman C Mah
Held KJ6APO Jun 25, 2009 → Feb 13, 2015 · first licensed Jun 25, 2009 as KJ6APO · 3 licenses · FRN 0018895995
-
- Licensee
- Sherman C Mah
- Address
- Attn: Sherman C. Mah
5389 Aspenwood Ct
Concord, CA 94521
- FRN
- 0018895995
- Previous call
- W1MAH (General)
- Last granted
- May 6, 2025
- Effective
- May 6, 2025
- Last action
- May 6, 2025
FCC actions (3)
- May 6, 2025 — License renewed LIREN
- Apr 17, 2015 — Vanity call sign granted VANGRT
- Apr 17, 2015 — License issued LIISS
-
- Licensee
- Sherman C Mah
- Address
- Attn: Sherman C. Mah
5389 Aspenwood Ct
Concord, CA 94521
- FRN
- 0018895995
- Previous call
- KJ6APO (General)
- Last granted
- Feb 13, 2015
- Effective
- Feb 13, 2015
- Last action
- Apr 17, 2015
FCC actions (3)
- Apr 17, 2015 — License canceled LICAN
- Feb 13, 2015 — Vanity call sign granted VANGRT
- Feb 13, 2015 — License issued LIISS
-
- Licensee
- Sherman C Mah
- Address
- 5389 Aspenwood Ct
Concord, CA 94521
- FRN
- 0018895995
- Last granted
- Jun 25, 2009
- Effective
- Sep 4, 2014
- Last action
- Feb 13, 2015
FCC actions (4)
- Feb 13, 2015 — License canceled LICAN
- Sep 4, 2014 — License modified LIMOD
- Jun 25, 2009 — License issued LIISS
- Jun 25, 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 May 27, 2010 → Sep 27, 2026 · 115 snapshots · as KJ6APO
Sherman C Mah
5389 Aspenwood Ct, Concord, CA 94521
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KJ6APO in the last 24 hours. They show up here within seconds of KJ6APO beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.