Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4UBT callsign genealogy
Currently held by Crist, Don 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 K4UBT's current licensee, walking backwards.
- Crist, Don RFLgranted 2002-07-02cancelled 2003-07-22
Successor callsigns
Callsigns held now by people who previously held K4UBT.
No current licensee on record previously held this callsign.