Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7SWJ callsign genealogy
Currently held by PETERSEN, DAVID L
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 N7SWJ's current licensee, walking backwards.
- Petersen, DaveCOgranted 2023-09-26cancelled 2023-11-04
Successor callsigns
Callsigns held now by people who previously held N7SWJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7SWJ, oldest first.
- PETERSEN, DAVID L CO1999-04-28 → cancelled 2003-07-18
- Petersen, David L CO2023-11-04 active