Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W0ROR callsign genealogy
Currently held by HOLMBERG, BERTEN 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 W0ROR's current licensee, walking backwards.
- BJORK, DAVID AMNgranted 2008-01-29cancelled 2008-10-15
Successor callsigns
Callsigns held now by people who previously held W0ROR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0ROR, oldest first.
- HOLMBERG, BERTEN A MN1994-03-08 → cancelled 2006-03-09
- BJORK, DAVID A MN2018-08-08 active