Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1ZIM callsign genealogy
Currently held by ZIMMER, ROBERT L
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 W1ZIM's current licensee, walking backwards.
- ZIMMER, ROBERT LVTgranted 2018-05-15
Successor callsigns
Callsigns held now by people who previously held W1ZIM.
- ZIMMER, ROBERT LVTgranted 2018-05-15