🕒 FCC license data updated today 7:15 am CST (FCC files through Nov 3, 2026) · next update tomorrow 6:00 am CST
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)
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 Oct 31, 1994 → Apr 17, 2003 · 17 discs N6IFF
· General · issued May 17, 1994, expires May 17, 2004
MARK H. FOSTER
550 CARLTON CT 111, GRAND FORKS, ND 58203
Seen Sep 9, 1993 → May 3, 1994 · 2 discs N6IFF
· General · issued May 25, 1984, expires May 25, 1994
MARK H FOSTER
477 1/2 S AUBURN ST, GRASS VALLEY, CA 95945
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Jul 1, 2024 → Nov 1, 2026 · 15 snapshots · as N6IFF
MARK H FOSTER
Attn: Mark Foster PO Box 7186 GRAND FORKS, ND 58202-7186
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.
1995 → 1997 · 2 editions N6IFF · class G
Mark H Fosterh 550 Carlton T 11 Grand Forks No 58103 1995 p.1186, 1997 p.1251
1994 · 1 edition N6IFF · class G
Mark H Foster 477 1/2 S Auburn St, Grass Valley, CA 95945 1994 p.1075
1993 · 1 edition N6IFF · class G
Mark Fosterh 477 112 S Auburn S~ Grass Valley , CA 95945 1993 p.1023
1991 · 1 edition N6IFF · class G
Mark H Foster 477 1/2 S Auburn St, Grass Valley, CA 95945 Winter 1991 p.907
1988 · 1 edition N6IFF · class G
Mark H Foster 477 111 S Auburn St, Grass Valley, CA 95945 Winter 1988 p.820
1985 · 1 edition N6IFF · class G
Mark Hfoster 477 1/2 S Auburn St, Grass Valley, CA 95945 Winter 1985 p.796
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for N6IFF in the last 24 hours. They show up here within seconds of N6IFF beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.
● confirmed on the air · ● probably · ● reported off the air · ● unknown · ◉ this license · ring = 50 miles · center is the ZIP code (approximate) · click a dot for the repeater's page
● confirmed on the air · ● probably · ● reported off the air · no dot = unknown (hover a dot for the evidence)