Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3LDM callsign genealogy
Currently held by Dioguardi, Lorenzo M
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 N3LDM's current licensee, walking backwards.
- Dioguardi, Lorenzo MPAgranted 2026-05-27cancelled 2026-06-16
Successor callsigns
Callsigns held now by people who previously held N3LDM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3LDM, oldest first.
- KAPLAN, NORMAN L MD2011-10-01 → cancelled 2023-12-27
- Dioguardi, Lorenzo M PA2026-06-16 active