Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2USZ callsign genealogy
Currently held by HELMSTADTER, STEPHEN 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 K2USZ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held K2USZ.
- HELMSTADTER, STEPHEN AAZgranted 2023-06-23cancelled 2023-10-24