🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 8, 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)
Currently held by SAMUEL W WALDENBERG
· 1 holder on record
Current holder: SAMUEL W WALDENBERG
Held W7ZKA Jan 20, 1987 → present
· first licensed Jan 20, 1987 as W7ZKA
· 1 license · FRN 0002184174 📖 In the printed callbooks since 1957 as W7ZKA, before the FCC's online records
W7ZKAActiveAmateur ExtraJan 20, 1987 → expires Nov 1, 2026
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 Apr 4, 1997 → Apr 17, 2003 · 12 discs W7ZKA
· Amateur Extra · issued Nov 1, 1996, expires Nov 1, 2006
SAMUEL W. WALDENBERG
244 E EVERGREEN DR, KALISPELL, MT 59901
Seen Sep 9, 1993 → Oct 27, 1996 · 7 discs W7ZKA
· Amateur Extra · issued Jan 20, 1987, expires Jan 20, 1997
SAMUEL W WALDENBERG
244 E EVERGREEN DR, KALISPELL, MT 59901
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Nov 7, 2004 → Oct 4, 2026 · 48 snapshots · as W7ZKA
SAMUEL W WALDENBERG
PO Box 826 BIGFORK, MT 59911
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 W7ZKA · class E
Samuel W Waldenberg 244 E Evergreen Dr, Kalispell, MT 59901 1997 p.1659
1995 → 1996 · 2 editions W7ZKA · class E
Samuel W Waldenberg 144 E Evergreen Dr, Kalispell, MT 59901 1995 p.1549, 1996 p.1597
1994 · 1 edition W7ZKA · class E
Samuel W Waldenberg 244 E Evergreen Dr, Kalispell, MT 59901 1994 p.1419
1991 → 1993 · 3 editions W7ZKA · class E
Samuel W Waldenberg 144 E Evergreen Dr, Kalispell, MT 59901 Winter 1991 p.1176, 1992 p.1228, 1993 p.1334
1989 → 1990 · 2 editions W7ZKA · class E
Samuel W Waldenberg 244 E Evergreen Dr, Kalispell, MT 59901 Winter 1989 p.1065, Winter 1990 p.1082
1987 · 1 edition W7ZKA · class E
Samuel Wwaldenberg 144 E Evergreen Dr, Kalispell, MT 59901 Winter 1987 p.1019
1986 · 1 edition W7ZKA · class E
Samuel Wwaldenberg 244 E Evergreen Dr, Kalispell, MT 59901 Winter 1986 p.1002
1984 → 1985 · 2 editions W7ZKA · class E
Samuel ~ Waldenberg 144 E Evergreen Dr, Kalispell Mt 5990! Winter 1984 p.996, Winter 1985 p.1001
1980 → 1983 · 3 editions W7ZKA · class E
Samuel W Waldenberg 244 E Evergreen Dr, Kalispell, MT 59901 Winter 1980 p.882, Winter 1982 p.924, Winter 1983 p.956
1967 → 1979 · 7 editions W7ZKA · class C
S.6.muel W Waldenberg 425 La Salle Rd, Kaispell, MT 59901 Fall 1967 p.483, Spring 1970 p.494, Fall 1971 p.493, Winter 1975 p.496, Winter 1976 p.506, Winter 1977 p.550, Winter 1979 p.321
1966 · 1 edition W7ZKA
Samuel W. Waldenberg.203 Park Dr.great Falls Spring 1966 p.444
1965 · 1 edition W7ZKA
Samuel W. Waldenberg 203 Park Or, Great Falls Mont Summer 1965 p.442
1964 · 1 edition W7ZKA
Samuel W. W A L D E N B E R G 2 03 Park D R . G R E A T F A L L S Mont Fall 1964 p.432
1963 · 1 edition W7ZKA
Samuel We Waldenberg1203 Park Or1great Falls Mont Summer 1963 p.462
1962 · 1 edition W7ZKA
Samuel W W A L D E N B E R G 2 0 3 Park Dr, Great F A L L S Mont Fall 1962 p.443
1961 · 1 edition W7ZKA
Samuel W. Waldenberg 203 Park Or, Great Falls Mont Fall 1961 p.460
None → 1961 · 3 editions W7ZKA · class E
Samuel W Waldenberg 244 E Evergreen Dr, Kalispell None p.878, Fall 1957 p.362, Spring 1961 p.443
📡 On the Air: APRS, Digital & WSPR Spots
No APRS positions, PSK Reporter reports or WSPR spots for W7ZKA in the last 24 hours. They show up here within seconds of W7ZKA beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.
● confirmed on the air · ● probably · ● reported off the air · ● unknown · ◉ this license · ring = 50 miles · center is the ZIP code (approximate) · click a dot for the repeater's page
● confirmed on the air · ● probably · ● reported off the air · no dot = unknown (hover a dot for the evidence)