N9TPB
FCC License Search
🕒 FCC license data updated yesterday 7:15 am CDT (FCC files through Oct 13, 2026) · next update today 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)JOHN M GRUNSFELD
FRN 0008427650 · first licensed Jun 21, 2000 as KC5ZTF · 1 license on record
📝 FCC Applications (4)
| Received | File number | Service | Purpose | Status | Call |
|---|---|---|---|---|---|
| Mar 13, 2017 | 0007696270 | HAM | Renewal | Granted | KC5ZTF |
| Sep 26, 2011 | 0004887784 | HAM | Administrative update | Granted | KC5ZTF |
| Mar 22, 2007 | 0002961520 | HAM | Renewal | Granted | KC5ZTF |
| Jan 12, 2004 | 0001575825 | HAM | Administrative update | Granted | KC5ZTF |
Complete Licensing History
-
- Licensee
- JOHN M GRUNSFELD
- Address
- PO Box 20705
Boulder, CO 80308
- FRN
- 0008427650
- Last granted
- Mar 14, 2017
- Effective
- Mar 14, 2017
- Last action
- Mar 14, 2017
FCC actions (8)
- Mar 14, 2017 — License renewed LIREN
- Sep 27, 2011 — Administrative update LIAUA
- Mar 23, 2007 — License renewed LIREN
- Jan 13, 2004 — Administrative update LIAUA
- Nov 1, 2000 — Record corrected COR
- Nov 1, 2000 — Record corrected COR
- Nov 1, 2000 — Record corrected COR
- Jun 21, 2000 — License modified LIMOD
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
- Seen May 12, 2017 → Oct 11, 2026 · 22 snapshots · as KC5ZTF
JOHN M GRUNSFELD
PO Box 20705
Boulder, CO 80308 - Seen Oct 17, 2011 → Feb 15, 2017 · 25 snapshots · as KC5ZTF
JOHN M GRUNSFELD
PO Box 279
Highland, MD 20777 - Seen Nov 7, 2004 → May 27, 2010 · 2 snapshots · as KC5ZTF
JOHN M GRUNSFELD
PO Box 58462
Houston, TX 77258