🕒 FCC license data updated yesterday 7:15 am CST (FCC files through Nov 2, 2026) · next update today 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)
K9ZTO HAM
✅ Available for a vanity request — K9ZTO was last held in the 1990s (license expired May 10, 1995), before the FCC's online records begin, so the two-year wait is long over. Confirm in the FCC's vanity system before applying.
1x3 call: Technician, General, Advanced and Amateur Extra licensees can request it.
No pending applications list it.
Last requested Oct 19, 2020 as choice 2:
not granted, that applicant got K9CTO instead.
Not in the FCC's online records (1999 → now), but held before then: see below.
Held Before 1999
K9ZTO in the 1993–2003 Callbooks
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 4, 1997 · 6 discs K9ZTO
· Technician Plus · issued May 10, 1985, expires May 10, 1995
PETER V DAL COROBBO
18650 MARSHFIELD AVE, HOMEWOOD, IL 60430
Seen Sep 9, 1993 → May 3, 1994 · 2 discs K9ZTO
· Technician · issued May 10, 1985, expires May 10, 1995
PETER V DAL COROBBO
18650 MARSHFIELD AVE, HOMEWOOD, IL 60430
K9ZTO in the Printed Callbooks, 1909–1997
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.
1996 → 1997 · 2 editions K9ZTO · class T
Peter V Dal Corobbo 18650 Marshf•ld Ave, ':1:~~~p ~ ~:, ~~ Lh~~rii, O Km ~i:fm~~a~i~~anapons ~', ~m, IL 61061 1996 p.1910, 1997 p.1982
1988 → 1994 · 5 editions K9ZTO · class T
Peter V Dal Corobbo 18650 Marshfield Ave, Homewood, IL 60430 Winter 1988 p.1273, Winter 1990 p.1308, Winter 1991 p.1418, 1992 p.1477, 1994 p.1701
1985 · 1 edition K9ZTO · class T
Peter V Dal Corobbo 1bb5 Marshfield Ave, Homewood Il &0430 Winter 1985 p.1222
1984 · 1 edition K9ZTO · class T
Peter V Dal Corobbo 18b5 Marshfield Ave, Homewood Il B0430 Winter 1984 p.2
1981 → 1983 · 2 editions K9ZTO · class T
Peter V Dal Corobbo 18650 Marshfield Ave, Homewood 1981 p.1023, Winter 1983 p.1173
1967 → 1980 · 11 editions K9ZTO · class T
Peter D. Corobbo 10441 Corliss Av, Chicago 28 Il Fall 1967 p.605, Winter 1971 p.1, Fall 1971 p.622, Winter 1972 p.628, Winter 1973 p.627, 1974 p.595, Winter 1975 p.2, Winter 1976 p.631, Winter 1977 p.684, Winter 1979 p.516, Winter 1980 p.1085
1961 · 1 edition K9ZTO
Peter V.oal Cor08motl0441 Corliss Chicago 28 I L L Fall 1961 p.571
1961 · 1 edition K9ZTO
Peter V.dal Corobbo 10441 Corl I $s» Chicago 28 Ill Spring 1961 p.546
1960 · 1 edition K9ZTO
Peter V.dal Corobbotl044l Corlis5 Chicago 28 Ill Winter 1960 p.544
None · 1 edition K9ZTO · class T
T Tardv Dal Corobbo 18650 Marshfield Ave, Homewood Il None p.595
Others Requesting K9ZTO
1 application listed K9ZTO as a choice, newest first.