Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4RAC callsign genealogy
Currently held by Munson, M Katherine
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 KB4RAC's current licensee, walking backwards.
- Munson, M KatherineMDgranted 2002-12-19cancelled 2003-07-22
Successor callsigns
Callsigns held now by people who previously held KB4RAC.
- Munson Jr, Donald EFLgranted 2021-06-09
All historical holders
Every license row we've seen with the callsign KB4RAC, oldest first.
- Munson Jr, Donald E MD1992-01-21 → cancelled 2001-06-09
- Munson, M Katherine FL2014-04-08 → cancelled 2025-07-23