Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0ZF callsign genealogy
Currently held by DAKOTA CAL CONTESTERS
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 K0ZF's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K0ZF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0ZF, oldest first.
- DAKOTA CAL CONTESTERS CA1999-04-28 → cancelled 2011-04-29
- Uhlrich, Allen P KS2021-03-05 active