Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD3LFN callsign genealogy
Currently held by Bertelsen, Douglas C
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 KD3LFN's current licensee, walking backwards.
- Bertelsen, Douglas CMOgranted 2012-11-16cancelled 2022-11-26
Successor callsigns
Callsigns held now by people who previously held KD3LFN.
No current licensee on record previously held this callsign.