Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6YZS callsign genealogy
Currently held by Gronemeier, John H
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 K6YZS's current licensee, walking backwards.
- GRONEMEIER, JOHN Hcancelled 1998-05-28
Successor callsigns
Callsigns held now by people who previously held K6YZS.
- Gronemeier, JohnIDgranted 2017-05-23