🕒 FCC license data updated today 6:02 am CDT (FCC files through Oct 16, 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)
KA3MRU HAM
✅ Available for a vanity request — free since Jul 28, 2017.
2x3 call: any licensee 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 Oct 26, 1995 → Apr 17, 2003 · 15 discs KA3MRU
· General · issued Jul 27, 1995, expires Jul 27, 2005
WILLIAM A. THOMPSON
4336 LEXINGTON AVE, JACKSONVILLE, FL 32210
Seen Sep 9, 1993 → May 12, 1995 · 4 discs KA3MRU
· General · issued Aug 27, 1985, expires Aug 27, 1995
WILLIAM A THOMPSON
7832 DANIELS AVE, BALTIMORE, MD 21234
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 KA3MRU
WILLIAM A THOMPSON
4336 LEXINGTON AVE, JACKSONVILLE, FL 32210
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.
1997 · 1 edition KA3MRU · class G
William A Thompson 4jj6 Lexington Ave, Jacksonville Fl J1110 1997 p.507
1996 · 1 edition KA3MRU · class G
William A Thompson! 4336 Lexington Ave'pjacksonville , FL 31210 1996 p.497
1995 · 1 edition KA3MRU · class G
William A Thompson 7831 Daniels Ave, Baltimore, MD 21134 1995 p.512
1986 → 1994 · 2 editions KA3MRU · class G
William A Thompson 7832 Daniels Ave, Altimore, MD 21234 Winter 1986 p.365, 1994 p.456
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for KA3MRU in the last 24 hours. They show up here within seconds of KA3MRU beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.