Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4DL callsign genealogy
Currently held by TRIFF, JOHN J
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 KD4DL's current licensee, walking backwards.
- LOWERY JR, DONALD JGAgranted 2002-07-30cancelled 2010-10-05
Successor callsigns
Callsigns held now by people who previously held KD4DL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4DL, oldest first.
- TRIFF, JOHN J FL1995-08-21 → cancelled 2007-08-22
- LOWERY JR, DONALD J GA2020-09-15 active