Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4SG callsign genealogy
Currently held by Hollyer, David 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 W4SG's current licensee, walking backwards.
- Terry, Dennis WSCgranted 2007-08-11cancelled 2015-03-10
Successor callsigns
Callsigns held now by people who previously held W4SG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4SG, oldest first.
- Hollyer, David L FL2004-10-20 → cancelled 2013-02-19
- Terry, Dennis W SC2024-12-20 active