Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4UBD callsign genealogy
Currently held by MARTINDALE, NEWMAN B
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 N4UBD's current licensee, walking backwards.
- N8FJLno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held N4UBD.
- MARTINDALE, NEWMAN BFLgranted 2021-04-27