🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 28, 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)
W9ZEC HAM
✅ Available for a vanity request — free since Mar 29, 2018.
1x3 call: Technician, General, Advanced and Amateur Extra licensees can request it.
No pending applications list it.
Not currently held
· 1 holder on record
· available since Mar 29, 2018
Previous holder: Leo Sivin
Held W9ZEC Jul 8, 1986 → Mar 28, 2016
· first licensed Jul 8, 1986 as W9ZEC
· 1 license · FRN 0002920254 📖 In the printed callbooks since 1938 as W9ZEC, before the FCC's online records
W9ZECExpiredAmateur ExtraJul 8, 1986 → Mar 28, 2016 (expired)
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 W9ZEC
· Amateur Extra · issued Jun 3, 2000, expires Mar 28, 2006
LEO SIVIN
9212 CALIFORNIA PLAZA, OMAHA, NE 68114-2652
Seen Apr 21, 1996 → May 2, 2000 · 8 discs W9ZEC
· Advanced · issued Mar 28, 1996, expires Mar 28, 2006
LEO SIVIN
9212 CALIFORNIA PLAZA, OMAHA, NE 68114-2652
Seen Oct 31, 1994 → Oct 26, 1995 · 3 discs W9ZEC
· Advanced · issued Jul 8, 1994, expires Jul 8, 1996
LEO SIVIN
9212 CALIFORNIA PLAZA, OMAHA, NE 68114-2652
Seen Sep 9, 1993 → May 3, 1994 · 2 discs W9ZEC
· Advanced · issued Jul 8, 1986, expires Jul 8, 1996
LEO SIVIN
2624 W GREENLEAF AVE, CHICAGO, IL 60645
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen May 27, 2010 → Oct 25, 2026 · 50 snapshots · as W9ZEC
Leo Sivin
9212 California Plaza 306, Omaha, NE 68114-2652
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 W9ZEC · class A
Leo Sivin 9111 California Plaza, Omaha, NE 68114 1997 p.1979
1995 · 1 edition W9ZEC · class A
Loo F Plaza Omaha, NE 68114 1995 p.1847
1994 · 1 edition W9ZEC · class A
Leo Sivin 2624 W Greenleaf Ave, Chicago, IL 60645 1994 p.1699
1992 · 1 edition W9ZEC · class A
Leo Sivin 1614 W Greenleaf Ave, Chicaio, IL 60645 1992 p.1475
1991 · 1 edition W9ZEC · class A
Leo Sivin 2624 W Greenleaf Ave, Chicago, IL 60645 Winter 1991 p.1416
1990 · 1 edition W9ZEC · class A
Leo S~in 1614 W Greenleaf Ave, C Icago, IL 60645 Winter 1990 p.1307
1986 · 1 edition W9ZEC · class A
Leo Sivin 7715 N Marshfield Ave, Chica'o Il B0b1b Winter 1986 p.1219
1980 → 1984 · 5 editions W9ZEC · class A
Leo Sivin 7725 N Marshfield Av, Chicago, IL 60626 Winter 1980 p.1084, 1981 p.1022, Winter 1982 p.1135, Winter 1983 p.1172, Winter 1984 p.1218
1979 · 1 edition W9ZEC · class A
Leo Smn 7725 N Marshfield Av, Chicago, IL 60626 Winter 1979 p.514
1971 → 1976 · 6 editions W9ZEC · class A
Leo Sivin 7725 N Marshfield Av, Chicago Winter 1971 p.621, Fall 1971 p.621, Winter 1972 p.627, Winter 1973 p.626, 1974 p.594, Winter 1976 p.630
1970 · 1 edition W9ZEC · class G
Leo Sivin 7725 N Harshfield Av, Chicago 60626 Il Spring 1970 p.614
1969 · 1 edition W9ZEC · class G
Leo S I V I N 7 7 2 5 N . Marshfield A V, Chicago 2 6 I L Summer 1969 p.602
1967 · 1 edition W9ZEC · class G
Leo Sivjn 7725 N. Marshfield Av, Chicago 76 Il Fall 1967 p.604
1964 · 1 edition W9ZEC
L E O S I V I N 7 7 2 5 N. M A R S H F I E L D Av, C H I C A G O 2 6 Ill Fall 1964 p.539
1961 → 1963 · 2 editions W9ZEC
Leo Sivin 7725 N. Marshfield Av, Chicago 26 Ill Spring 1961 p.544, Summer 1963 p.575
1960 · 1 edition W9ZEC
Leo Sivin1 7725 N1 Marshfield Av Chicago 26 Ill Winter 1960 p.543
1957 → 1959 · 3 editions W9ZEC
L E O Sivin 7725 North Marshfield Ave., Chicago 26, Ul. Fall 1957 p.435, Summer 1958 p.453, Spring 1959 p.469
1952 → 1956 · 6 editions W9ZEC
Leo Sivin 813 M Ontrose Avenue, Chicago, Ul. Fall 1952 p.286, Fall 1953 p.298, Spring 1954 p.306, Fall 1954 p.311, Fall 1955 p.369, Spring 1956 p.365
1950 → 1951 · 2 editions W9ZEC
Leo Sivin 4742 North Whipple Street, Chicago, Hl. Summer 1950 p.220, Spring 1951 p.256
1949 · 1 edition W9ZEC
Leo Sivm 4742 North Whipple Street, Chicago, HI Summer 1949 p.213
1948 · 1 edition W9ZEC
Leo Sivin 1730 Fifth Ave., Moline, HI Fall 1948 p.220
1938 · 1 edition W9ZEC
Leo Sivin 3009 Belle Plaine Av., Chicago. Spring 1938 p.181
None · 1 edition W9ZEC · class A
Leo Sivin 7725 N Marshfield Av, Chicago None p.594
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for W9ZEC in the last 24 hours. They show up here within seconds of W9ZEC beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.