Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4T callsign genealogy
Currently held by LINGERFELT, JOHN B
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 AJ4T's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AJ4T.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AJ4T, oldest first.
- LINGERFELT, JOHN B TN1997-11-21 → cancelled 1998-05-19
- Alexander, Robert D AL2018-01-24 active