Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4UCI callsign genealogy
Currently held by Haibel, Charles W
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 K4UCI's current licensee, walking backwards.
- Haibel, Charles WFLgranted 2007-03-07cancelled 2007-04-17
Successor callsigns
Callsigns held now by people who previously held K4UCI.
No current licensee on record previously held this callsign.