Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6ZIM callsign genealogy
Currently held by ZIMMERMAN, JOHN
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 W6ZIM's current licensee, walking backwards.
- ZIMMERMAN, JOHNCAgranted 1997-09-15cancelled 2006-12-29
Successor callsigns
Callsigns held now by people who previously held W6ZIM.
No current licensee on record previously held this callsign.