Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4LWZ callsign genealogy
Currently held by Zimmer III, Lawrence W
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 W4LWZ's current licensee, walking backwards.
- ZIMMER III, LAWRENCE WFLgranted 2015-01-22cancelled 2020-02-08
Successor callsigns
Callsigns held now by people who previously held W4LWZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4LWZ, oldest first.
- Zimmer, Lawrence W FL2012-12-04 → cancelled 2018-12-11
- Zimmer III, Lawrence W FL2020-02-08 active