Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7ASD callsign genealogy
Currently held by Nielsen, Jonathan
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 W7ASD's current licensee, walking backwards.
- Nielsen, JonathanWAgranted 2020-02-18cancelled 2020-08-25
Successor callsigns
Callsigns held now by people who previously held W7ASD.
No current licensee on record previously held this callsign.