🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 18, 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)
N3IRT HAM
✅ Available for a vanity request — free since Mar 22, 2022.
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 Oct 31, 2000 → Apr 17, 2003 · 6 discs N3IRT
· General · issued Sep 1, 2000, expires Nov 27, 2010
MICHAEL RUDOLPH
4521 BENNION RD, SILVER SPRING, MD 20906
Seen Sep 9, 1993 → May 2, 2000 · 13 discs N3IRT
· General · issued Nov 27, 1990, expires Nov 27, 2000
MICHAEL RUDOLPH
4521 BENNION RD, SILVER SPRING, MD 20906
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Nov 7, 2004 → Oct 18, 2026 · 65 snapshots · as N3IRT
MICHAEL RUDOLPH
4521 BENNION RD, SILVER SPRING, MD 20906
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 → 1995 · 2 editions N3IRT · class G
Michael Rudolph 4521 Bennion Rd, Silver Spring, MD 20906 1994 p.437, 1995 p.493
1992 · 1 edition N3IRT · class G
Michael Rudolph 4521 Bennion ~d, Silver Spring Winter 1992 p.393
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for N3IRT in the last 24 hours. They show up here within seconds of N3IRT beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.