Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ1Z callsign genealogy
Currently held by POTTER, WILLIAM 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 KJ1Z's current licensee, walking backwards.
- Cote Sr, Michael LMEgranted 2001-09-21cancelled 2004-04-28
Successor callsigns
Callsigns held now by people who previously held KJ1Z.
- POTTER, WILLIAM JORgranted 2017-12-06
All historical holders
Every license row we've seen with the callsign KJ1Z, oldest first.
- Cote Sr, Michael L ME2024-11-30 active
- POTTER, WILLIAM J— → cancelled 1998-01-12