Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5SDJ callsign genealogy
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 N5SDJ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held N5SDJ.
- FERNS, WILLIAM ANMgranted 2013-11-20cancelled 2026-03-06