Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AJ4UD callsign genealogy
Currently held by Smith, Nathan 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 AJ4UD's current licensee, walking backwards.
- Smith, Nathan PFLgranted 2009-04-15cancelled 2009-11-24
Successor callsigns
Callsigns held now by people who previously held AJ4UD.
No current licensee on record previously held this callsign.