Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9SKD callsign genealogy
Currently held by George, Forrest R
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 W9SKD's current licensee, walking backwards.
- Holzapfel, Mark DILgranted 2021-02-18cancelled 2024-02-23
Successor callsigns
Callsigns held now by people who previously held W9SKD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9SKD, oldest first.
- George, Forrest R IL2008-07-30 → cancelled 2020-09-19
- Holzapfel, mark D IL2024-02-23 active