Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA1ZYV callsign genealogy
Currently held by STEINHOFF, DEREK M
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 KA1ZYV's current licensee, walking backwards.
- Steinhoff, Derek MMIgranted 2018-12-20cancelled 2019-02-12
Successor callsigns
Callsigns held now by people who previously held KA1ZYV.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA1ZYV, oldest first.
- STEINHOFF, DEREK M CT1992-04-28 → cancelled 2004-04-29
- Steinhoff, Derek M MI2019-02-12 active