Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6RZ callsign genealogy
Currently held by GREEN, 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 K6RZ's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K6RZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6RZ, oldest first.
- GREEN, WILLIAM J CA1994-12-05 → cancelled 1998-05-18
- KOCH, HERBERT E CA2006-10-11 → cancelled 2018-10-12
- Menager, Morgann R CA2018-10-30 active