Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7YAD callsign genealogy
Currently held by SUDARSONO, ERWIN
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 N7YAD's current licensee, walking backwards.
- Adler, YoelAZgranted 2026-05-22cancelled 2026-06-13
Successor callsigns
Callsigns held now by people who previously held N7YAD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N7YAD, oldest first.
- SUDARSONO, ERWIN CA1993-05-04 → cancelled 2005-05-05
- Adler, Yoel AZ2026-06-13 active