Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3DI callsign genealogy
Currently held by MC CLOY, JOHN S
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 W3DI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W3DI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3DI, oldest first.
- MC CLOY, JOHN S NJ1988-12-13 → cancelled 2000-12-14
- AMOROSO, DANIEL F PA2020-12-29 active