Confidence: Medium · Source: FCC ULS · As of 2026-09-12
ND4P callsign genealogy
Currently held by ALVAREZ, DELIA A
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 ND4P's current licensee, walking backwards.
- Antion, Robert STNgranted 2014-02-13cancelled 2023-01-24
Successor callsigns
Callsigns held now by people who previously held ND4P.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign ND4P, oldest first.
- ALVAREZ, DELIA A FL1998-12-31 → cancelled 2010-12-16
- Mardis, Richard D FL2011-01-04 → cancelled 2023-01-05
- Antion, Robert S TN2023-01-24 active