Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD3XB callsign genealogy
Currently held by Gaffigan, Thomas V
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 KD3XB's current licensee, walking backwards.
- Gaffigan, Thomas VMDgranted 2014-09-15cancelled 2014-10-15
Successor callsigns
Callsigns held now by people who previously held KD3XB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD3XB, oldest first.
- STABLEY, JACK E PA1991-05-14 → cancelled 2003-05-15
- Gaffigan, Thomas V MD2025-09-20 active