Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DWC callsign genealogy
Currently held by SHEPHERD, MARY 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 K4DWC's current licensee, walking backwards.
- Cherni, David WFLgranted 2022-03-07cancelled 2022-04-09
Successor callsigns
Callsigns held now by people who previously held K4DWC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4DWC, oldest first.
- SHEPHERD, MARY A AL2007-08-23 → cancelled 2019-11-06
- Cherni, David w FL2022-04-09 active