Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W2TDI callsign genealogy
Currently held by Costello, Andrew D
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 W2TDI's current licensee, walking backwards.
- Costello, Andrew DNYgranted 2007-12-28cancelled 2015-07-25
Successor callsigns
Callsigns held now by people who previously held W2TDI.
No current licensee on record previously held this callsign.