Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1LSZ callsign genealogy
Currently held by Runge, Robert R
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 W1LSZ's current licensee, walking backwards.
- Runge, Robert RCTgranted 2018-10-10cancelled 2019-03-26
Successor callsigns
Callsigns held now by people who previously held W1LSZ.
No current licensee on record previously held this callsign.