Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0DEF callsign genealogy
Currently held by Robertson, Ian 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 N0DEF's current licensee, walking backwards.
- Robertson, Ian BNMgranted 2020-05-26cancelled 2020-07-14
Successor callsigns
Callsigns held now by people who previously held N0DEF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0DEF, oldest first.
- DIXON, LYLE J KS2006-03-30 → cancelled 2018-05-22
- Robertson, Ian B NM2020-07-14 active