N9TPB FCC License Search
🕒 FCC license data updated yesterday 7:15 am CDT (FCC files through Oct 11, 2026) · next update today 7:15 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)

KD4RU HAM

✅ Never issued — KD4RU 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 Jan 7, 2026 as choice 2: not granted, that applicant got KB4UR instead.
The FCC has no record of KD4RU ever being issued.
KD4RU 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.

Others Requesting KD4RU

1 application listed KD4RU as a choice, newest first.

FiledAwardApplicantChoice #KD4RUResult
Jan 7, 2026 Jan 25, 2026 K4RUR · LOWRY J BROCK · MERRITT ISLAND, FL 2Not granted They got KB4UR (choice 1)