Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KR4UMP callsign genealogy
Currently held by CRUMP, PAUL B
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 KR4UMP's current licensee, walking backwards.
- CRUMP, PAUL BNCgranted 2024-04-18cancelled 2024-05-07
Successor callsigns
Callsigns held now by people who previously held KR4UMP.
No current licensee on record previously held this callsign.