Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SLC callsign genealogy
Currently held by BRANNAN, DON G
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 K4SLC's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4SLC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4SLC, oldest first.
- BRANNAN, DON G NC2000-12-08 → cancelled 2013-02-27
- CASTLEBERRY II, SAMUEL L TX2025-12-09 active