🕒 FCC license data updated today 6:03 am CDT (FCC files through Oct 23, 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, WI · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)
N9NVO HAM
✅ Available for a vanity request — free since Aug 10, 2024.
1x3 call: Technician, General, Advanced and Amateur Extra licensees can request it.
No pending applications list it.
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 Apr 27, 2002 → Apr 17, 2003 · 3 discs N9NVO
· Technician · issued Jan 15, 2002, expires Jan 21, 2012
CHRISTOFFER M TROSSEN
9525 W. FOREST HOME AVE.; APT 11, HALES CORNERS, WI 53130
Seen Sep 9, 1993 → Nov 1, 2001 · 16 discs N9NVO
· Technician · issued Jan 21, 1992, expires Jan 21, 2002
CHRISTOFFER M. TROSSEN
5652 S 106 ST, HALES CORNERS, WI 53130
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Feb 18, 2013 → Oct 18, 2026 · 44 snapshots · as N9NVO
CHRISTOFFER M TROSSEN
745 W. Grange Ave, Apt 101, Milwaukee, WI 53221
From scanned copies of the printed callbooks (government lists from 1913, then the Radio Amateur Callbook to 1997), read by OCR, so names and streets can carry typos. Each line is one or more editions in a row showing the same name at the same address.
1994 → 1997 · 3 editions N9NVO · class T
Christoffer M Trossen 5652 § 106th St 1994 p.1652, Winter 1995 p.1760, 1997 p.1924
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for N9NVO in the last 24 hours. They show up here within seconds of N9NVO beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.