Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4LA callsign genealogy
Currently held by CROSS SR, FRED D
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 AD4LA's current licensee, walking backwards.
- Adelberg, Lawrence KGAgranted 2008-10-03cancelled 2010-09-28
Successor callsigns
Callsigns held now by people who previously held AD4LA.
- CROSS SR, FRED DALgranted 2019-10-04
All historical holders
Every license row we've seen with the callsign AD4LA, oldest first.
- CROSS SR, FRED D AL1993-09-28 → cancelled 1999-12-18
- Adelberg, Lawrence K GA2020-08-12 active