Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KO2Z callsign genealogy
Currently held by WELTER, JOSEPH J
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 KO2Z's current licensee, walking backwards.
- Lanteigne, Carlton DNHgranted 2018-04-18cancelled 2018-06-05
Successor callsigns
Callsigns held now by people who previously held KO2Z.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO2Z, oldest first.
- WELTER, JOSEPH J NY2006-05-09 → cancelled 2018-05-10
- Lanteigne, Carlton D NH2018-06-05 active