Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NA4B callsign genealogy
Currently held by YONTS, STANLEY L
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 NA4B's current licensee, walking backwards.
- FRONEK, BRIAN FFLgranted 2024-07-12cancelled 2025-06-06
Successor callsigns
Callsigns held now by people who previously held NA4B.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NA4B, oldest first.
- YONTS, STANLEY L FL2014-09-23 → cancelled 2023-05-17
- FRONEK, BRIAN F FL2025-06-06 active