Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4ALT callsign genealogy
Currently held by Thijn, Andre 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 K4ALT's current licensee, walking backwards.
- Thijn, Andre LFLgranted 2007-08-17cancelled 2008-12-23
Successor callsigns
Callsigns held now by people who previously held K4ALT.
No current licensee on record previously held this callsign.