Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4CSG callsign genealogy
Currently held by SHIELDS, SAMUEL 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 WB4CSG's current licensee, walking backwards.
- SHIELDS, DAVID GTNgranted 2020-09-30cancelled 2020-10-20
Successor callsigns
Callsigns held now by people who previously held WB4CSG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB4CSG, oldest first.
- SHIELDS, SAMUEL R TN2010-07-07 → cancelled 2018-10-31
- SHIELDS, DAVID G TN2020-10-20 active