Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4UKB callsign genealogy
Currently held by McElfresh, Marshall L
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 K4UKB's current licensee, walking backwards.
- MC ELFRESH, MARSHALL LALgranted 1995-09-08cancelled 2001-06-23
Successor callsigns
Callsigns held now by people who previously held K4UKB.
No current licensee on record previously held this callsign.