Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4PDM callsign genealogy
Currently held by WHITE, SHERYL 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 N4PDM's current licensee, walking backwards.
- Marcova, Dawn EALgranted 2021-12-20cancelled 2023-04-18
Successor callsigns
Callsigns held now by people who previously held N4PDM.
- WHITE, SHERYL ASCgranted 2021-03-30
All historical holders
Every license row we've seen with the callsign N4PDM, oldest first.
- GOTTFRIED, STUART W FL1998-04-01 → cancelled 2010-04-02
- WHITE, SHERYL A SC2015-09-29 → cancelled 2021-03-30
- Marcova, Dawn E AL2023-04-18 active