Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KL4NZ callsign genealogy
Currently held by Califf, Andrew 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 KL4NZ's current licensee, walking backwards.
- Califf, Andrew ACAgranted 2017-09-05cancelled 2021-04-27
Successor callsigns
Callsigns held now by people who previously held KL4NZ.
- Califf, Andrew ACAgranted 2017-09-05cancelled 2021-04-27
All historical holders
Every license row we've seen with the callsign KL4NZ, oldest first.
- Califf, Andrew A CA2017-09-05 → cancelled 2019-02-06
- Califf, Andrew A NV2021-04-27 active