N9TPB FCC License Search
🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 14, 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)

KC5ZTF HAM

Technician class licensed since 1997 (29 yrs) Boulder, CO
🔒 Not available — currently licensed, through Apr 2, 2027. If it isn't renewed, it opens for vanity requests Apr 3, 2029.

📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH

Currently held by JOHN M GRUNSFELD · 1 holder on record

Current holder: JOHN M GRUNSFELD

Held KC5ZTF Apr 2, 1997 → present · first licensed Apr 2, 1997 as KC5ZTF · 1 license · FRN 0008427650

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.
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 KC5ZTF in the last 24 hours. They show up here within seconds of KC5ZTF beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.