Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD3JT callsign genealogy
Currently held by CALLENDER JR, JOHN W
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 KD3JT's current licensee, walking backwards.
- Toole, Charles JTNgranted 2018-04-12cancelled 2018-08-24
Successor callsigns
Callsigns held now by people who previously held KD3JT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD3JT, oldest first.
- CALLENDER JR, JOHN W PA1993-12-07 → cancelled 2005-12-08
- Toole, Charles J GA2018-08-24 active