Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3TDC callsign genealogy
Currently held by Grasso, James
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 K3TDC's current licensee, walking backwards.
- Grasso, JamesCAgranted 2000-09-27cancelled 2002-06-18
Successor callsigns
Callsigns held now by people who previously held K3TDC.
No current licensee on record previously held this callsign.