Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KW1ZRD callsign genealogy
Currently held by Steinfeld, Henry S
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 KW1ZRD's current licensee, walking backwards.
- Steinfield, Henry SNCgranted 2023-06-27cancelled 2023-07-15
Successor callsigns
Callsigns held now by people who previously held KW1ZRD.
No current licensee on record previously held this callsign.