Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4L callsign genealogy
Currently held by SOPER, PETER J
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 AD4L's current licensee, walking backwards.
- SOPER, PETER JNCgranted 1995-05-22cancelled 2001-06-16
- KE4VNTno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held AD4L.
- Falknor, Frank BNYgranted 2019-05-09
All historical holders
Every license row we've seen with the callsign AD4L, oldest first.
- SOPER, PETER J NC2021-07-29 active
- —— → cancelled 1999-05-26