N9TPB
FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 18, 2026) · next update tomorrow 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, WI · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)KD0IO HAM
✅ Available for a vanity request — free since Jan 15, 2008.
2x2 call: Advanced and Amateur Extra licensees 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 Jan 15, 2008
Previous holder: JOHN D HENDRICKSON
Held KD0IO Sep 27, 1988 → Jan 14, 2006
· first licensed Sep 27, 1988 as KD0IO
· 2 licenses · FRN 0014430649
📖 In the printed callbooks since 1970 as WA0IRZ, before the FCC's online records
-
📦 Moved: Denver, CO → Elizabeth, CO
- Licensee
- JOHN D HENDRICKSON
- Address
- 35595 RUNNING BROOK LN
ELIZABETH, CO 80107-7895
- FRN
- 0014430649
- Previous call
- KD0IO (Advanced)
- Last granted
- Jan 13, 2026
- Effective
- Jan 16, 2026
- Last action
- Jan 16, 2026
FCC actions (7)
- Jan 16, 2026 — Administrative update LIAUA
- Jan 13, 2026 — License renewed LIREN
- Sep 8, 2018 — Administrative update LIAUA
- May 31, 2016 — License modified LIMOD
- Dec 16, 2015 — License renewed LIREN
- Jan 14, 2006 — Vanity call sign granted VANGRT
- Jan 14, 2006 — License issued LIISS
-
- Licensee
- JOHN D HENDRICKSON
- Address
- 2350 S KRAMERIA
DENVER, CO 80222
- FRN
- 0014430649
- Last granted
- Jun 15, 1998
- Effective
- Jun 15, 1998
- Last action
- Jan 14, 2006
FCC actions (2)
- Jan 14, 2006 — License canceled LICAN
- Dec 22, 2005 — FCC action ESCFRN
Callbook Records, 1993–2003
From the FCC amateur database as published on the QRZ! callsign CD-ROMs, 1993–2003, before and alongside the FCC's online records (which start in 1999). "Seen" dates are the first and last disc showing that record; the issue date is the FCC's, so it can be a renewal of an even older license.
- Seen Nov 11, 1998 → Apr 17, 2003 · 10 discs
KD0IO · Advanced · issued Jun 15, 1998, expires Jun 15, 2008
JOHN D. HENDRICKSON
2350 S KRAMERIA, DENVER, CO 80222 - Seen Sep 9, 1993 → Mar 9, 1998 · 9 discs
KD0IO · Advanced · issued Sep 27, 1988, expires Sep 27, 1998 · previously WD5JFI (General)
JOHN D HENDRICKSON
2350 S KRAMERIA, DENVER, CO 80222
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
- Seen Sep 27, 2026 → Oct 18, 2026 · 4 snapshots · as WA0IRZ
JOHN D HENDRICKSON
35595 RUNNING BROOK LN, ELIZABETH, CO 80107-7895 - Seen Nov 7, 2004 → Oct 18, 2026 · 50 snapshots · as KD0IO
JOHN D HENDRICKSON
2350 S KRAMERIA, DENVER, CO 80222 - Seen Jan 22, 2019 → Sep 25, 2025 · 13 snapshots · as WA0IRZ
JOHN D HENDRICKSON
35595 Running Brook Lane, ELIZABETH, CO 80107 - Seen May 27, 2010 → Sep 3, 2018 · 32 snapshots · as WA0IRZ
JOHN D HENDRICKSON
2350 SOUTH KRAMERIA STREET, DENVER, CO 80222
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for KD0IO in the last 24 hours. They show up here within seconds of KD0IO beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.