Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WW7CAT callsign genealogy
Currently held by JACOBSEN, DORMAN H
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 WW7CAT's current licensee, walking backwards.
- Polivka, Trevor MORgranted 2025-09-16cancelled 2025-12-09
Successor callsigns
Callsigns held now by people who previously held WW7CAT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WW7CAT, oldest first.
- JACOBSEN, DORMAN H OR2009-09-18 → cancelled 2021-11-16
- Polivka, Trevor M OR2025-12-09 active