Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6ZAD callsign genealogy
Currently held by BJERKE, NELS E
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 W6ZAD's current licensee, walking backwards.
- Helfrich, John JCAgranted 2021-07-19cancelled 2021-08-06
Successor callsigns
Callsigns held now by people who previously held W6ZAD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6ZAD, oldest first.
- BJERKE, NELS E CA2004-06-29 → cancelled 2016-09-15
- Helfrich, John J PA2021-08-06 active