Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4TWJ callsign genealogy
Currently held by INGRAM, DAVID L
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 K4TWJ's current licensee, walking backwards.
- KJ4SSOcancelledDavid Ingram Memorial CW ClubALgranted 2010-03-04cancelled 2010-04-02
Successor callsigns
Callsigns held now by people who previously held K4TWJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4TWJ, oldest first.
- INGRAM, DAVID L AL2000-03-16 → cancelled 2010-01-20
- DAVID INGRAM MEMORIAL CW CLUB AL2020-05-26 active