🕒 FCC license data updated yesterday 7:15 am CDT (FCC files through Oct 11, 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)
Currently held by MARK D SCHIELDS
· 1 holder on record
Current holder: MARK D SCHIELDS
Held WB0OAJ Jan 30, 1990 → present
· first licensed Jan 30, 1990 as WB0OAJ
· 1 license · FRN 0002236792 📖 In the printed callbooks since 1978 as WB0OAJ, before the FCC's online records
WB0OAJActiveAmateur ExtraJan 30, 1990 → expires Jan 30, 2030
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, 2000 → Apr 17, 2003 · 6 discs WB0OAJ
· Amateur Extra · issued Aug 23, 2000, expires Jan 30, 2010
MARK D. SCHIELDS
3797 10TH AVE E, DICKINSON, ND 58601
Seen May 2, 2000 · 1 disc WB0OAJ
· Advanced · issued Dec 17, 1999, expires Jan 30, 2010
MARK D. SCHIELDS
3797 10TH AVE E, DICKINSON, ND 58601
Seen May 12, 1995 → Oct 8, 1999 · 9 discs WB0OAJ
· Advanced · issued Dec 22, 1994, expires Jan 30, 2000
MARK D. SCHIELDS
3797 10TH AVE E, DICKINSON, ND 58601
Seen Sep 9, 1993 → Oct 31, 1994 · 3 discs WB0OAJ
· Advanced · issued Jan 30, 1990, expires Jan 30, 2000
MARK D SCHIELDS
RR 3 BOX 169, DICKINSON, ND 58601
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Nov 7, 2004 → Oct 11, 2026 · 49 snapshots · as WB0OAJ
MARK D SCHIELDS
3797 10TH AVE E, DICKINSON, ND 58601
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 · 1 edition WB0OAJ · class N
Gordon W Nelson 2901 W 63rd Road 48, Denver, CO 58601 1994 p.83
1985 → 1986 · 2 editions WB0OAJ · class G
Mark 0 Schields Rr I, Hazen, ND 58545 Winter 1985 p.71, Winter 1986 p.68
1980 → 1984 · 4 editions WB0OAJ · class G
Mark D Schields 1214 Concord Ct, Wahpeton, ND 58075 Winter 1980 p.65, 1981 p.1089, Winter 1983 p.74, Winter 1984 p.74
1978 · 1 edition WB0OAJ · class G
Mark D Schields 1403 Av “a, Wahpeton Ae -. Koodb E Jeffrey J Singer, 10334 Briar: Hollow-#9, Stlouis. Winter 1978 p.50
None · 1 edition WB0OAJ · class G
Mark D Schields 1214 Concord Ct, Wahpeton -, ND 58075 None p.1166
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for WB0OAJ in the last 24 hours. They show up here within seconds of WB0OAJ beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.