Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0PDF callsign genealogy
Currently held by CHATFIELD, H BLAKE
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 N0PDF's current licensee, walking backwards.
- Gruff, Christopher LNEgranted 2021-02-12cancelled 2023-01-24
Successor callsigns
Callsigns held now by people who previously held N0PDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0PDF, oldest first.
- CHATFIELD, H BLAKE CO2001-06-14 → cancelled 2013-08-21
- Gruff, Christopher L NE2023-01-24 active