Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1DFD callsign genealogy
Currently held by BIELLO, NICHOLAS J
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 N1DFD's current licensee, walking backwards.
- Biello, Nicholas JMAgranted 2003-11-04cancelled 2008-04-18
Successor callsigns
Callsigns held now by people who previously held N1DFD.
No current licensee on record previously held this callsign.