Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD0BMU callsign genealogy
Currently held by FRANK, WILLIAM R
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KD0BMU's current licensee, walking backwards.
- Frank, William RMOgranted 2003-04-08cancelled 2007-08-29
Successor callsigns
Callsigns held now by people who previously held KD0BMU.
- FRANK, WILLIAM RMOgranted 2023-02-22