Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD1IR callsign genealogy
Currently held by FILLION, THOMAS B
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 KD1IR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD1IR.
No current licensee on record previously held this callsign.