Confidence: Medium · Source: FCC ULS · As of 2026-09-12
ND3B callsign genealogy
Currently held by GUY, ROBERT 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 ND3B's current licensee, walking backwards.
- DeVirgiliis, RichardPAgranted 2003-06-10cancelled 2009-03-10
Successor callsigns
Callsigns held now by people who previously held ND3B.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign ND3B, oldest first.
- GUY, ROBERT D MD1996-06-14 → cancelled 2008-06-17
- DeVirgiliis, Richard PA2018-12-28 active