Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4ZRE callsign genealogy
Currently held by THOMPSON, WALTER A
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 K4ZRE's current licensee, walking backwards.
- Loos III, Ralph EFLgranted 2019-10-17cancelled 2019-11-22
Successor callsigns
Callsigns held now by people who previously held K4ZRE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4ZRE, oldest first.
- THOMPSON, WALTER A FL1995-08-03 → cancelled 2007-08-04
- Loos III, Ralph E FL2019-11-22 active