🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 14, 2026) · next update today 8:30 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)
KB3OT HAM
✅ Never issued — KB3OT isn't in the FCC's public license data (which starts in 1999) or the 1993–2003 callbooks, and nothing in it blocks a vanity request. Calls like this are usually granted when requested.
2x2 call: Advanced and Amateur Extra licensees can request it.
No pending applications list it.
Last requested Oct 7, 2020 as choice 1:
application dismissed.
The FCC has no record of KB3OT ever being issued.
KB3OT 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.
1988 → 1991 · 3 editions KB3OT · class A
Robert E Zimmer 205 Commonwealth Ave, West Mifflin, PA 15122 Winter 1988 p.375, Winter 1990 p.374, Winter 1991 p.399
1984 → 1987 · 3 editions KB3OT · class A
Robert E Zimmer 105 Commonwealth Ave, West Mifflin, PA 15111 Winter 1984 p.374, Winter 1985 p.373, Winter 1987 p.370
1983 · 1 edition KB3OT · class A
Robert E Zimmer 205 Commonwealth Ave, West Mifflin, PA 15122 Winter 1983 p.361
1982 · 1 edition KB3OT · class A
Robert Ezimmer 20s Commonwealth Ave, West Mifflin Winter 1982 p.351
None · 1 edition KB3OT · class A
Robert E Zimmer 205 Commonwealth Ave, West Mifflin Pa None p.287
Others Requesting KB3OT
1 application listed KB3OT as a choice, newest first.