Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4DA callsign genealogy
Currently held by PATTON, JONATHAN P
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 AJ4DA's current licensee, walking backwards.
- PATTON, JONATHAN PSCgranted 2007-08-06cancelled 2007-11-05
Successor callsigns
Callsigns held now by people who previously held AJ4DA.
No current licensee on record previously held this callsign.