Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1DDX callsign genealogy
Currently held by Mondello, James P
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 W1DDX's current licensee, walking backwards.
- Mondello, James PMAgranted 2006-03-03cancelled 2006-10-28
Successor callsigns
Callsigns held now by people who previously held W1DDX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1DDX, oldest first.
- DILLMAN SR, RICHARD H CT1992-02-25 → cancelled 2004-02-26
- Mondello, James P MA2016-08-31 active